| Player History |
| 06-01-1999 | Wins the MLBAA SL1 Pitcher of the Month Award. |
| 06-07-1999 | Was selected to the 1999 MLB Double A All-Star Game. |
| 07-04-1999 | Injured (tender elbow), day-to-day for 2 weeks. |
| 07-29-1999 | Injured (tender shoulder), out for 1-2 weeks. |
| 01-01-2000 | SISA scouting updated ratings (potential): Stuff: 11 (11); Movement: 15 (15); Control: 5 (7). |
| 06-26-2000 | Injured (tender shoulder), day-to-day for 1-2 weeks. |
| 11-22-2000 | Received a 1-year contract worth a total of $292,814 through automatic renewal. |
| 01-01-2001 | SISA scouting updated ratings (potential): Stuff: 8 (8); Movement: 17 (17); Control: 12 (12). |
| 11-20-2001 | Received a 1-year contract worth a total of $302,089 through automatic renewal. |
| 01-01-2002 | SISA scouting updated ratings (potential): Stuff: 7 (7); Movement: 13 (13); Control: 11 (11). |
| 04-27-2002 | Injured (strained tricep muscle), out for 5 weeks. |
| 11-20-2002 | Received a 1-year contract worth a total of $1,087,854 through arbitration. |
| 01-01-2003 | SISA scouting updated ratings (potential): Stuff: 7 (7); Movement: 14 (14); Control: 8 (8). |
| 05-30-2003 | Injured (damaged meniscus (knee)), out for 4-5 weeks. |
| 11-16-2003 | Received a 1-year contract worth a total of $2,213,948 through arbitration. |
| 01-01-2004 | SISA scouting updated ratings (potential): Stuff: 14 (14); Movement: 15 (15); Control: 13 (13). |
| 09-01-2004 | Wins the MLB AL Pitcher of the Month Award. |
| 11-21-2004 | Received a 1-year contract worth a total of $2,783,200 through arbitration. |
| 01-01-2005 | SISA scouting updated ratings (potential): Stuff: 10 (10); Movement: 14 (14); Control: 8 (8). |
| 05-01-2005 | Wins the MLB AL Pitcher of the Month Award. |
| 06-27-2005 | Was selected to the 2005 Major League Baseball All-Star Game. |
| 07-31-2005 | Signed a 4-year contract extension worth a total of $16,610,400 with the Texas Rangers organization. |
| 11-10-2005 | Wins the 2005 MLB AL Outstanding Pitcher Award. |
| 01-01-2006 | SISA scouting updated ratings (potential): Stuff: 12 (12); Movement: 12 (12); Control: 9 (9). |
| 04-24-2006 | Injured (back spasms), out for 1-2 weeks. |
| 06-15-2006 | Injured (back spasms), out for 1-2 weeks. |
| 01-01-2007 | SISA scouting updated ratings (potential): Stuff: 12 (12); Movement: 12 (12); Control: 9 (9). |
| 09-30-2007 | Injured (strained elbow ligament), out for 3 months. |
| 01-01-2008 | SISA scouting updated ratings (potential): Stuff: 11 (11); Movement: 12 (12); Control: 8 (9). |