| 12/01/1971 | Drafted in the 1971 first-year player draft by the Baltimore Orioles. (Round 1, Pick 18, 18th overall pick). | 
		
			| 01/01/1972 | OSA scouting updated ratings (potential): Stuff: 57 (66); Movement: 50 (55); Control: 45 (45). | 
		
			| 04/05/1972 | Named the #12 prospect in the MLB | 
		
			| 06/01/1972 | Wins the MLB AL Rookie of the Month Award. | 
		
			| 08/28/1972 | Pitches a 5-hit shutout against the Minnesota Twins with 4 strikeouts and 2 BB allowed! | 
		
			| 09/01/1972 | Wins the MLB AL Rookie of the Month Award. | 
		
			| 11/02/1972 | Finished 2nd in 1972 MLB AL Rookie of the Year Award voting. | 
		
			| 01/01/1973 | OSA scouting updated ratings (potential): Stuff: 69 (69); Movement: 56 (57); Control: 48 (48). | 
		
			| 05/08/1973 | Pitches a 6-hit shutout against the Oakland Athletics with 6 strikeouts and 1 BB allowed! | 
		
			| 01/01/1974 | OSA scouting updated ratings (potential): Stuff: 66 (66); Movement: 54 (54); Control: 46 (46). | 
		
			| 08/01/1974 | Wins the MLB AL Pitcher of the Month Award. | 
		
			| 01/01/1975 | OSA scouting updated ratings (potential): Stuff: 66 (66); Movement: 55 (55); Control: 45 (45). | 
		
			| 03/01/1975 | Was traded by the Baltimore Orioles to the Chicago Cubs, along with SP Vern Ruhle,  in exchange for 1B Bruce Bochte and SP Jamie Easterly. | 
		
			| 04/25/1975 | Pitches a 1-hit shutout against the St. Louis Cardinals with 10 strikeouts and 0 BB allowed! | 
		
			| 07/13/1975 | Was selected to the 1975 Major League Baseball All-Star Game. | 
		
			| 01/01/1976 | OSA scouting updated ratings (potential): Stuff: 61 (61); Movement: 53 (58); Control: 46 (46). | 
		
			| 07/16/1976 | Pitches a 2-hit shutout against the Los Angeles Dodgers with 6 strikeouts and 0 BB allowed! | 
		
			| 08/01/1976 | Wins the MLB NL Pitcher of the Month Award. | 
		
			| 10/21/1976 | Drafted in the 1976 expansion draft from the Chicago Cubs by the Seattle Mariners. (Round 17, Pick 1, 33rd overall pick). | 
		
			| 01/01/1977 | OSA scouting updated ratings (potential): Stuff: 44 (67); Movement: 44 (49); Control: 34 (44). | 
		
			| 01/01/1978 | OSA scouting updated ratings (potential): Stuff: 29 (59); Movement: 42 (53); Control: 24 (44). | 
		
			| 01/01/1979 | OSA scouting updated ratings (potential): Stuff: 27 (57); Movement: 41 (50); Control: 27 (44). | 
		
			| 01/01/1980 | OSA scouting updated ratings (potential): Stuff: 27 (27); Movement: 42 (42); Control: 27 (27). | 
		
			| 10/20/1980 | Retired from professional baseball. | 
	
			
	
		| LEADERBOARD APPEARANCES | 
|---|
		
			| 		
	
		| Year | GS | Rank |  
		| 1972 | 33 | 6 |  
		| 1973 | 33 | 7 |  
		| 1975 | 33 | 1 |  
		| 1976 | 33 | 1 |  |  | 		
	
		| Year | Win. % | Rank |  
		| 1976 | .609 | 9 |  |  | 		
	
		| Year | K | Rank |  
		| 1972 | 166 | 10 |  
		| 1973 | 172 | 6 |  
		| 1974 | 170 | 7 |  
		| 1975 | 166 | 9 |  | 
		
			|  | 		
	
		| Year | ERA | Rank |  
		| 1972 | 2.55 | 5 |  
		| 1974 | 2.59 | 5 |  
		| 1976 | 2.77 | 10 |  | 		
	
		| Year | WHIP | Rank |  
		| 1972 | 1.14 | 10 |  | 		
	
		| Year | K/BB | Rank |  
		| 1974 | 2.46 | 8 |  | 		
	
		| Year | RA/9 | Rank |  
		| 1972 | 10.32 | 9 |  | 
		
			| 		
	
		| Year | HR/9 | Rank |  
		| 1974 | 0.48 | 5 |  | 		
	
		| Year | H/9 | Rank |  
		| 1972 | 7.19 | 4 |  | 		
	
		| Year | K/9 | Rank |  
		| 1972 | 6.82 | 10 |  
		| 1973 | 6.87 | 8 |  
		| 1974 | 6.78 | 8 |  
		| 1975 | 7.15 | 6 |  | 		
	
		| Year | QS | Rank |  
		| 1972 | 25 | 4 |  
		| 1974 | 21 | 10 |  | 		
	
		| Year | QSP | Rank |  
		| 1972 | .758 | 5 |  
		| 1974 | .656 | 10 |  | 
		
			| 		
	
		| Year | SHO | Rank |  
		| 1972 | 1 | 9 |  
		| 1973 | 1 | 9 |  
		| 1976 | 1 | 7 |  | 		
	
		| Year | WAR | Rank |  
		| 1972 | 4.5 | 8 |  
		| 1974 | 5.8 | 6 |  |  |  |  |