Jameson Roberts
Free Agent
Jameson Roberts
Birthdate:
Aug. 23, 2026 (26 y, 3 m, 8 d)
Born In:
St. George, MO, USA
Nationality:
American
Position:
P
Bats/Throws:
L/L
Height/Weight:
6'8"/203
Entry:
2044 Draft - Round: 15, Overall: 536, Team: Colorado Rockies
Contract:
Free Agent
ML Service Time:
None
OSA Rating History
Loading Chart...
Ratings Changes
2052-11-18
Gap vs R decreased from 40 to 35
Power Potential decreased from 25 to 20
Power decreased from 25 to 20
Power vs R decreased from 25 to 20
Power vs L decreased from 25 to 20
Eye Potential increased from 20 to 30
Eye increased from 20 to 30
Eye vs R increased from 20 to 30
Eye vs L increased from 20 to 25
Bunt for Hit increased from 20 to 25
Speed decreased from 20 to 0
Stealing decreased from 25 to 0
Baserunning decreased from 25 to 0
P defense decreased from 60 to 55
Stuff Potential increased from 40 to 45
Stuff increased from 40 to 45
Stuff vs L increased from 40 to 45
Movement Potential increased from 35 to 45
Movement increased from 35 to 45
Movement vs R increased from 35 to 45
Movement vs L increased from 35 to 45
Control Potential decreased from 60 to 55
Control decreased from 60 to 55
Control vs R decreased from 60 to 55
Control vs L decreased from 60 to 55
GB% increased from 53% to 55%
Splitter Pot decreased from 60 to 55
Splitter decreased from 60 to 55
Local Popularity increased from Unknown to Insignificant
2052-11-08
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
2052-11-04
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Stuff Potential decreased from 45 to 40
Stuff decreased from 45 to 40
2052-10-29
Movement Potential decreased from 40 to 35
Movement decreased from 40 to 35
Movement vs R decreased from 40 to 35
2052-10-25
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Movement Potential increased from 35 to 40
Movement increased from 35 to 40
Movement vs R increased from 35 to 40
2052-10-18
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
2052-10-08
Weight decreased from 204 to 203
2052-09-23
Stuff Potential increased from 40 to 45
Stuff increased from 40 to 45
2052-09-16
Stuff Potential decreased from 45 to 40
Stuff decreased from 45 to 40
2052-09-09
Stuff vs L decreased from 45 to 40
Movement Potential decreased from 40 to 35
Movement decreased from 40 to 35
Movement vs R decreased from 40 to 35
2052-09-02
Gap vs R increased from 35 to 40
Stuff vs L increased from 40 to 45
2052-08-26
Stuff increased from 40 to 45
Movement Potential increased from 35 to 40
Movement increased from 35 to 40
Movement vs R increased from 35 to 40
2052-08-19
Stuff decreased from 45 to 40
Control vs L increased from 55 to 60
2052-08-05
Avoid Ks vs L increased from 25 to 30
Stuff vs L decreased from 45 to 40
Movement Potential decreased from 40 to 35
Movement decreased from 40 to 35
Movement vs R decreased from 40 to 35
Control vs L decreased from 60 to 55
Weight increased from 203 to 204
2052-07-22
Avoid Ks vs L decreased from 30 to 25
Movement Potential increased from 35 to 40
Movement increased from 35 to 40
Movement vs R increased from 35 to 40
Control vs L increased from 55 to 60
2052-07-15
Weight increased from 202 to 203
2052-07-08
Avoid Ks vs L increased from 25 to 30
Movement Potential decreased from 40 to 35
Movement decreased from 40 to 35
Movement vs R decreased from 40 to 35
2052-07-01
Movement vs L decreased from 40 to 35
2052-06-24
Avoid Ks vs L decreased from 30 to 25
Stuff vs L increased from 40 to 45
Movement vs L increased from 35 to 40
2052-06-17
Avoid Ks vs L increased from 25 to 30
2052-06-10
Avoid Ks vs L decreased from 30 to 25
2052-06-03
Stuff vs L decreased from 45 to 40
Control vs L decreased from 60 to 55
2052-05-27
Control vs L increased from 55 to 60
2052-05-20
Movement Potential increased from 35 to 40
Movement increased from 35 to 40
Movement vs R increased from 35 to 40
2052-05-13
Stuff vs L increased from 40 to 45
2052-05-06
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Gap vs R decreased from 40 to 35
Stuff vs L decreased from 45 to 40
Movement Potential decreased from 40 to 35
Movement decreased from 40 to 35
Movement vs R decreased from 40 to 35
Movement vs L decreased from 40 to 35
Control vs L decreased from 60 to 55
GB% decreased from 55% to 53%
Weight increased from 201 to 202
2052-04-15
Stuff vs L increased from 40 to 45
2052-04-08
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Stuff Potential increased from 40 to 45
Stuff increased from 40 to 45
Stuff vs R increased from 40 to 45
2052-04-01
Weight increased from 200 to 201
2052-02-19
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Stuff Potential decreased from 45 to 40
Stuff decreased from 45 to 40
Stuff vs R decreased from 45 to 40
Stuff vs L decreased from 45 to 40
Weight decreased from 201 to 200
2051-12-31
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
2051-12-21
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
2051-12-11
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
2051-11-10
Weight decreased from 202 to 201
2051-09-11
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
2051-09-04
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
2051-08-14
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
2051-08-07
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Weight decreased from 203 to 202
2051-07-31
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Avoid Ks Potential increased from 25 to 30
Avoid Ks increased from 25 to 30
Avoid Ks vs L increased from 25 to 30
Stuff increased from 40 to 45
Stuff vs L increased from 40 to 45
GB% increased from 54% to 55%
Splitter increased from 55 to 60
2051-07-24
Avoid Ks vs R increased from 25 to 30
2051-07-17
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Avoid Ks vs R decreased from 30 to 25
2051-07-10
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
2051-07-03
Avoid Ks Potential decreased from 30 to 25
Avoid Ks decreased from 30 to 25
2051-06-26
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Avoid Ks Potential increased from 25 to 30
Avoid Ks increased from 25 to 30
2051-06-19
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
2051-06-12
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Avoid Ks Potential decreased from 30 to 25
Avoid Ks decreased from 30 to 25
Weight decreased from 204 to 203
2051-06-05
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Avoid Ks Potential increased from 25 to 30
Avoid Ks increased from 25 to 30
Stuff Potential increased from 40 to 45
Stuff vs R increased from 40 to 45
2051-05-29
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Avoid Ks Potential decreased from 30 to 25
Avoid Ks decreased from 30 to 25
Stuff Potential decreased from 45 to 40
2051-05-22
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Stuff Potential increased from 35 to 45
2051-05-15
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Avoid Ks Potential increased from 25 to 30
Avoid Ks increased from 25 to 30
Splitter decreased from 60 to 55
Weight decreased from 205 to 204
2051-05-01
Avoid Ks Potential decreased from 30 to 25
Avoid Ks decreased from 30 to 25
2051-04-24
Avoid Ks Potential increased from 25 to 30
Avoid Ks increased from 25 to 30
Avoid Ks vs R increased from 25 to 30
Splitter increased from 55 to 60
2051-04-17
Control Potential decreased from 65 to 60
2051-03-20
Control Potential increased from 60 to 65
Weight increased from 204 to 205
2051-03-06
Sac Bunt increased from 45 to 50
Stamina decreased from 45 to 40
Weight increased from 203 to 204
2050-11-19
Control Potential decreased from 65 to 60
Weight increased from 202 to 203
2050-09-19
Control Potential increased from 60 to 65
2050-09-12
Weight decreased from 203 to 202
2050-09-05
Control Potential decreased from 65 to 60
2050-08-29
Control Potential increased from 60 to 65
Weight decreased from 204 to 203
2050-08-22
Control Potential decreased from 65 to 60
2050-08-15
Control Potential increased from 60 to 65
2050-08-01
Control Potential decreased from 65 to 60
2050-05-30
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Weight increased from 203 to 204
2050-05-23
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
2050-05-02
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
GB% decreased from 56% to 54%
Curveball increased from 40 to 45
Weight increased from 202 to 203
2050-04-18
Weight decreased from 203 to 202
2050-04-11
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
2050-04-04
Stuff increased from 35 to 40
Stuff vs R increased from 35 to 40
Stuff vs L increased from 35 to 40
Movement Potential decreased from 45 to 40
Control Potential increased from 60 to 65
Control increased from 50 to 60
Control vs R increased from 50 to 60
Control vs L increased from 50 to 60
GB% decreased from 58% to 56%
Stamina decreased from 55 to 45
Fastball Pot decreased from 55 to 50
2050-03-21
Weight increased from 202 to 203
2050-03-07
Weight decreased from 203 to 202
2050-02-21
Weight increased from 202 to 203
2050-01-24
Movement decreased from 45 to 40
Movement vs R decreased from 45 to 40
Movement vs L decreased from 45 to 40
2049-12-31
Movement increased from 40 to 45
Movement vs R increased from 40 to 45
Movement vs L increased from 40 to 45
Weight decreased from 203 to 202
2049-12-19
Speed decreased from 25 to 20
Movement decreased from 45 to 40
Movement vs R decreased from 45 to 40
2049-12-07
Speed increased from 20 to 25
Movement vs L decreased from 45 to 40
2049-11-23
Weight increased from 202 to 203
2049-11-04
Movement increased from 40 to 45
Movement vs R increased from 40 to 45
Movement vs L increased from 40 to 45
2049-10-29
Movement decreased from 45 to 40
Movement vs R decreased from 45 to 40
Movement vs L decreased from 45 to 40
2049-10-19
Movement vs L increased from 40 to 45
2049-10-18
Speed decreased from 25 to 20
Movement increased from 40 to 45
Movement vs R increased from 40 to 45
2049-10-11
Movement decreased from 45 to 40
Movement vs R decreased from 45 to 40
2049-10-04
Movement increased from 40 to 45
Movement vs R increased from 40 to 45
2049-09-27
Movement decreased from 45 to 40
Movement vs R decreased from 45 to 40
2049-09-20
Movement increased from 40 to 45
Movement vs R increased from 40 to 45
2049-08-16
Movement decreased from 45 to 40
Movement vs R decreased from 45 to 40
2049-08-02
Movement increased from 40 to 45
Movement vs R increased from 40 to 45
2049-07-26
Curveball Pot decreased from 50 to 45
Splitter increased from 50 to 55
2049-07-12
Weight increased from 201 to 202
2049-06-07
Weight increased from 200 to 201
2049-04-19
Stuff increased from 30 to 35
Stuff vs R increased from 30 to 35
Stuff vs L increased from 30 to 35
Movement increased from 30 to 40
Movement vs R increased from 30 to 40
Movement vs L increased from 30 to 40
Control Potential increased from 55 to 60
Control increased from 40 to 50
Control vs R increased from 40 to 50
Control vs L increased from 40 to 50
Velocity increased from 93-95 mph to 94-96 mph
GB% decreased from 61% to 58%
Fastball Pot increased from 50 to 55
Fastball increased from 45 to 50
Curveball Pot increased from 45 to 50
Curveball increased from 35 to 40
Splitter Pot increased from 55 to 60
Splitter increased from 45 to 50
Weight decreased from 201 to 200
2049-03-08
Speed increased from 20 to 25
2049-02-22
Speed decreased from 25 to 20
Weight increased from 200 to 201
2049-01-01
Contact increased from 20 to 25
Contact vs R increased from 20 to 25
Contact vs L increased from 20 to 25
Gap Potential decreased from 40 to 35
Gap decreased from 40 to 35
Avoid Ks Potential increased from 20 to 25
Avoid Ks increased from 20 to 25
Avoid Ks vs R increased from 20 to 25
Avoid Ks vs L increased from 20 to 25
Control increased from 35 to 40
Control vs R increased from 35 to 40
Control vs L increased from 35 to 40
Velocity increased from 92-94 mph to 93-95 mph
GB% increased from 60% to 61%
Curveball increased from 30 to 35
Splitter increased from 40 to 45
Weight decreased from 201 to 200
Local Popularity decreased from Insignificant to Unknown
2048-07-01
Speed increased from 20 to 25
Stealing increased from 20 to 25
Movement increased from 25 to 30
Movement vs R increased from 25 to 30
Movement vs L increased from 25 to 30
Hold increased from 70 to 75
Weight increased from 200 to 201
2048-01-01
Gap Potential increased from 35 to 40
Gap increased from 35 to 40
Gap vs R increased from 35 to 40
Gap vs L increased from 30 to 35
Avoid Ks Potential decreased from 25 to 20
Speed decreased from 25 to 20
Stuff increased from 25 to 30
Stuff vs R increased from 25 to 30
Stuff vs L increased from 25 to 30
Movement Potential increased from 40 to 45
Control increased from 30 to 35
Control vs R increased from 30 to 35
Control vs L increased from 30 to 35
Velocity increased from 91-93 mph to 92-94 mph
GB% increased from 59% to 60%
Fastball Pot increased from 45 to 50
Fastball increased from 40 to 45
Splitter Pot increased from 50 to 55
Splitter increased from 35 to 40
Weight decreased from 201 to 200
Local Popularity increased from Unknown to Insignificant
2047-07-01
Stuff Potential decreased from 40 to 35
Splitter decreased from 40 to 35
Weight increased from 199 to 201
2047-01-01
Power Potential decreased from 30 to 25
GB% decreased from 61% to 59%
Stamina increased from 50 to 55
Curveball Pot decreased from 50 to 45
Splitter Pot decreased from 55 to 50
Weight decreased from 201 to 199
2046-07-01
Speed increased from 20 to 25
2046-01-01
Gap Potential decreased from 40 to 35
P defense increased from 55 to 60
Movement Potential decreased from 45 to 40
Control Potential decreased from 60 to 55
Control increased from 25 to 30
Control vs R increased from 25 to 30
Control vs L increased from 25 to 30
GB% increased from 60% to 61%
Fastball Pot decreased from 50 to 45
Splitter Pot decreased from 60 to 55
Weight increased from 199 to 201
Local Popularity decreased from Insignificant to Unknown
2045-07-01
Gap Potential increased from 35 to 40
Power decreased from 30 to 25
Power vs R decreased from 30 to 25
Power vs L decreased from 30 to 25
Weight increased from 198 to 199
Height increased from 203 to 204
2045-01-01
Contact Potential decreased from 35 to 25
Gap increased from 30 to 35
Gap vs R increased from 30 to 35
Gap vs L increased from 25 to 30
Sac Bunt decreased from 60 to 45
Bunt for Hit decreased from 25 to 20
Infield Range decreased from 45 to 40
Turn Double Play decreased from 25 to 20
Outfield Range increased from 25 to 30
P defense decreased from 60 to 55
Stuff Potential decreased from 45 to 40
Movement Potential increased from 40 to 45
Movement increased from 20 to 25
Movement vs R increased from 20 to 25
Movement vs L increased from 20 to 25
Control Potential increased from 45 to 60
Control increased from 20 to 25
Control vs R increased from 20 to 25
Control vs L increased from 20 to 25
Velocity increased from 90-92 mph to 91-93 mph
GB% increased from 58% to 60%
Curveball Pot decreased from 60 to 50
Curveball decreased from 35 to 30
Splitter Pot increased from 55 to 60
Splitter increased from 30 to 40
Weight increased from 192 to 198
Height increased from 202 to 203
Local Popularity increased from Unknown to Insignificant
2044-07-01
Gap Potential increased from 30 to 35
Gap increased from 25 to 30
Gap vs R increased from 25 to 30
Power Potential increased from 25 to 30
Sac Bunt increased from 55 to 60
Outfield Arm increased from 35 to 40
P defense decreased from 65 to 60
Movement Potential decreased from 45 to 40
Control Potential increased from 40 to 45
GB% increased from 57% to 58%
Weight decreased from 193 to 192
2043-07-01
Power Potential decreased from 30 to 25
Sac Bunt decreased from 60 to 55
Infield Range decreased from 50 to 45
Stuff Potential decreased from 50 to 45
Control Potential decreased from 45 to 40
Curveball Pot decreased from 65 to 60
Curveball increased from 30 to 35
Weight increased from 189 to 193
Height increased from 200 to 202
2043-01-01
Weight increased from 185 to 189
Height increased from 198 to 200
2042-07-01
Contact Potential increased from 30 to 35
Gap increased from 20 to 25
Gap vs R increased from 20 to 25
Gap vs L increased from 20 to 25
Power increased from 25 to 30
Power vs R increased from 25 to 30
Power vs L increased from 25 to 30
Stuff Potential increased from 45 to 50
Control Potential decreased from 50 to 45
Fastball Pot decreased from 55 to 50
Weight increased from 182 to 185
Height increased from 197 to 198
2042-01-01
Weight increased from 176 to 182
Height increased from 193 to 197
2041-07-01
Weight increased from 174 to 176
Height increased from 192 to 193