| Player History |
| 10/26/1988 | Signed a 1-year contract extension worth a total of $1,150,000 with the Boston Red Sox organization. |
| 12/26/1988 | Signed a 1-year contract extension worth a total of $1,150,000 with the Boston Red Sox organization. |
| 01/01/1989 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 7 (7). |
| 05/13/1989 | Pitches a 3-hit shutout against the Seattle Mariners with 10 strikeouts and 1 BB allowed! |
| 06/01/1989 | Wins the MLB AL Pitcher of the Month Award. |
| 07/09/1989 | Was selected to the 1989 Major League Baseball All-Star Game. |
| 01/01/1990 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 6 (6). |
| 06/08/1990 | Pitches a 2-hit shutout against the Cleveland Indians with 16 strikeouts and 1 BB allowed! |
| 08/07/1990 | Pitches a 3-hit shutout against the California Angels with 7 strikeouts and 3 BB allowed! |
| 08/12/1990 | Pitches a 5-hit shutout against the Seattle Mariners with 4 strikeouts and 2 BB allowed! |
| 08/22/1990 | Pitches a 2-hit shutout against the Baltimore Orioles with 13 strikeouts and 4 BB allowed! |
| 09/17/1990 | Pitches a 3-hit shutout against the Baltimore Orioles with 10 strikeouts and 1 BB allowed! |
| 11/12/1990 | Became a free agent. |
| 01/01/1991 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 7 (7). |
| 03/05/1991 | Signed a 4-year contract worth a total of $12,600,000 with the Minnesota Twins organization. |
| 08/01/1991 | Wins the MLB AL Pitcher of the Month Award. |
| 01/01/1992 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 7 (7). |
| 05/07/1992 | Pitches a 6-hit shutout against the Baltimore Orioles with 7 strikeouts and 3 BB allowed! |
| 06/12/1992 | Pitches a 6-hit shutout against the Chicago White Sox with 11 strikeouts and 2 BB allowed! |
| 07/21/1992 | Pitches a 3-hit shutout against the Cleveland Indians with 15 strikeouts and 0 BB allowed! |
| 08/15/1992 | Pitches a 5-hit shutout against the Seattle Mariners with 8 strikeouts and 4 BB allowed! |
| 01/01/1993 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 6 (7). |
| 07/11/1993 | Was selected to the 1993 Major League Baseball All-Star Game. |
| 01/01/1994 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 7 (7). |
| 06/07/1994 | Pitches a 6-hit shutout against the California Angels with 7 strikeouts and 1 BB allowed! |
| 11/22/1994 | Became a free agent. |
| 01/01/1995 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 7 (7). |
| 02/23/1995 | Signed a 4-year contract worth a total of $20,140,000 with the Oakland Athletics organization. |
| 01/01/1996 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 7 (7). |
| 05/01/1996 | Earns his 200th career Major League Baseball victory! |
| 07/17/1996 | Collects his 3000th career Major League Baseball strikeout! |
| 01/01/1997 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 7 (8); Control: 7 (7). |
| 07/19/1997 | Pitches a 4-hit shutout against the Cleveland Indians with 6 strikeouts and 3 BB allowed! |
| 09/11/1997 | Pitches a 2-hit shutout against the Detroit Tigers with 6 strikeouts and 2 BB allowed! |
| 01/01/1998 | OSA scouting updated ratings (potential): Stuff: 6 (6); Movement: 7 (7); Control: 6 (7). |
| 09/06/1998 | Pitches a 1-hit shutout against the New York Yankees with 5 strikeouts and 2 BB allowed! |
| 11/22/1998 | Became a free agent. |