| 08/18/1985 | Signed a minor league contract with the Chicago Cubs organization with a signing bonus of $40,000. |
| 01/01/1986 | OSA scouting updated ratings (potential): Stuff: 46 (48); Movement: 54 (56); Control: 51 (51). |
| 06/26/1986 | Pitches a 5-hit shutout against the Tidewater Mets with 5 strikeouts and 1 BB allowed! |
| 07/20/1986 | Pitches a 5-hit shutout against the Omaha Royals with 2 strikeouts and 0 BB allowed! |
| 01/01/1987 | OSA scouting updated ratings (potential): Stuff: 48 (49); Movement: 59 (63); Control: 51 (51). |
| 04/15/1987 | Pitches a 2-hit shutout against the Indianapolis Expos with 4 strikeouts and 1 BB allowed! |
| 05/01/1987 | Wins the MLAAA SL1 Pitcher of the Month Award. |
| 05/20/1987 | Injured (ruptured ulnar collateral ligament), out for 12 months. |
| 06/18/1987 | Was selected to the 1987 ML Triple A All-Star Game. |
| 01/01/1988 | OSA scouting updated ratings (potential): Stuff: 52 (52); Movement: 63 (63); Control: 51 (61). |
| 04/04/1988 | Named the #68 prospect in the ML |
| 06/13/1988 | Injured (finger blister), day-to-day for 2 days. |
| 01/01/1989 | OSA scouting updated ratings (potential): Stuff: 52 (52); Movement: 63 (63); Control: 51 (61). |
| 04/03/1989 | Named the #74 prospect in the ML |
| 04/16/1989 | Injured (elbow soreness), out for 2 weeks. |
| 05/04/1989 | Pitches a 2-hit shutout against the Toledo Twins with 5 strikeouts and 2 BB allowed! |
| 07/29/1989 | Injured (sore back), day-to-day for 1 day. |
| 01/01/1990 | OSA scouting updated ratings (potential): Stuff: 52 (51); Movement: 63 (63); Control: 53 (61). |
| 11/20/1990 | Received a 1-year contract worth a total of $300,000 through automatic renewal. |
| 01/01/1991 | OSA scouting updated ratings (potential): Stuff: 52 (51); Movement: 64 (63); Control: 62 (61). |
| 06/24/1991 | Injured on 06/23/1991, diagnosed with a strained oblique, is day-to-day. |
| 11/28/1991 | Received a 1-year contract worth a total of $300,000 through automatic renewal. |
| 01/01/1992 | OSA scouting updated ratings (potential): Stuff: 52 (51); Movement: 69 (68); Control: 62 (61). |
| 06/01/1992 | Injured on 05/30/1992, diagnosed with a stiff back, will miss 2 weeks. |
| 06/13/1992 | Suffered setback in recovery from injury, will miss another 4 days. |
| 11/06/1992 | Signed a 3-year contract extension worth a total of $6,300,000 with the Chicago Cubs organization. |
| 01/01/1993 | OSA scouting updated ratings (potential): Stuff: 51 (51); Movement: 69 (68); Control: 63 (61). |
| 10/07/1993 | Injured on 10/05/1993, diagnosed with a hamstring strain, will miss 3 months. |
| 01/01/1994 | OSA scouting updated ratings (potential): Stuff: 51 (51); Movement: 70 (69); Control: 63 (61). |
| 06/10/1994 | Injured (finger blister), day-to-day for 3 days. |
| 07/31/1994 | Was traded by the Chicago Cubs to the St. Louis Cardinals in exchange for a 2nd draft pick. |
| 11/18/1994 | Received a 1-year contract worth a total of $4,005,000 through arbitration. |
| 01/01/1995 | OSA scouting updated ratings (potential): Stuff: 51 (51); Movement: 69 (69); Control: 60 (61). |
| 03/17/1995 | Was traded by the St. Louis Cardinals to the Montreal Expos, along with a 4th draft pick, a 5th draft pick, in exchange for 3B Carlos Martinez, MR Tim Burke. |
| 06/08/1995 | Was traded by the Montreal Expos to the St. Louis Cardinals, along with 1B Andres Galarraga, LF Ted Wood, MR Turk Wendell, in exchange for SP Jeff Fassero, SP Jose Silva, CF Eric Karros. |
| 08/30/1995 | Injured (calf strain), out for 3-4 weeks. |
| 11/17/1995 | Became a free agent. |
| 01/01/1996 | OSA scouting updated ratings (potential): Stuff: 57 (57); Movement: 71 (72); Control: 60 (61). |
| 05/19/1996 | Signed a 1-year contract worth a total of $2,800,000 with the Chicago White Sox organization. |
| 11/11/1996 | Became a free agent. |
| 01/01/1997 | OSA scouting updated ratings (potential): Stuff: 50 (50); Movement: 76 (76); Control: 60 (61). |
| 03/24/1997 | Signed a 1-year contract worth a total of $1,200,000 with the Minnesota Twins organization. |
| 11/19/1997 | Became a free agent. |
| 01/01/1998 | OSA scouting updated ratings (potential): Stuff: 56 (56); Movement: 73 (74); Control: 60 (61). |