| Player History |
| 11-18-2007 | Received a 1-year contract worth a total of $380,000 through automatic renewal. |
| 11-25-2007 | Was traded by the Colorado Rockies to the New York (A) Yankees, along with LF M. Holliday, SP J. Francis, in exchange for SP J. Chamberlain, LF L. Scott, CF C. Rasmus, SP C. Wang. |
| 11-25-2007 | Was traded by the New York (A) Yankees to the Detroit Tigers, along with $5,000,000, in exchange for SP J. Verlander, 1B T. Helton. |
| 01-01-2008 | SISA scouting updated ratings (potential): Stuff: 6 (7); Movement: 5 (8); Control: 5 (5). |
| 07-02-2008 | Injured (dead arm syndrome), out for 1-2 weeks. |
| 09-01-2009 | Wins the MLB AL Pitcher of the Month Award. |
| 11-25-2009 | Received a 1-year contract worth a total of $380,000 through automatic renewal. |
| 12-15-2009 | Was traded by the Detroit Tigers to the Oakland Athletics, along with 2B K. Johnson, SS A. Gonzalez, DH J. Vázquez, MR D. Pensomn, in exchange for CL P. Cisneros, SS J. Reyes. |
| 01-01-2010 | SISA scouting updated ratings (potential): Stuff: 8 (7); Movement: 8 (8); Control: 5 (5). |
| 03-05-2010 | Injured (back spasms), day-to-day for 2 weeks. |
| 07-17-2010 | Was selected to the 2010 Major League Baseball All-Star Game. |
| 07-17-2010 | Was selected to the 2010 Major League Baseball All-Star Game. |
| 09-04-2010 | Signed a 3-year contract extension worth a total of $25,500,000 with the Oakland Athletics organization. |
| 01-01-2011 | SISA scouting updated ratings (potential): Stuff: 8 (7); Movement: 8 (8); Control: 5 (5). |
| 01-01-2012 | OSA scouting updated ratings (potential): Stuff: 8 (7); Movement: 8 (8); Control: 5 (6). |
| 06-04-2012 | Injured (strep throat), day-to-day for 2 days. |
| 01-01-2013 | OSA scouting updated ratings (potential): Stuff: 8 (7); Movement: 8 (8); Control: 6 (6). |
| 03-19-2013 | Signed a 3-year contract extension worth a total of $25,500,000 with the Oakland Athletics organization. |
| 07-26-2013 | Injured (torn back muscle), out for 8 months. |
| 01-01-2014 | OSA scouting updated ratings (potential): Stuff: 8 (7); Movement: 8 (8); Control: 6 (6). |
| 04-09-2014 | Injured (back spasms), day-to-day for 1-2 weeks. |
| 06-05-2014 | Was traded by the Oakland Athletics to the Boston Red Sox in exchange for 2B J. Behan, 1B S. Parker. |
| 01-01-2015 | OSA scouting updated ratings (potential): Stuff: 7 (7); Movement: 8 (8); Control: 6 (6). |
| 11-25-2015 | Was traded by the Boston Red Sox to the Milwaukee Brewers in exchange for SP B. Douglas, MR F. Foijens. |
| 12-02-2015 | Signed a 4-year contract extension worth a total of $7,480,000 with the Milwaukee Brewers organization. |
| 01-01-2016 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 7 (7); Control: 6 (6). |
| 05-01-2016 | Wins the MLB NL Pitcher of the Month Award. |
| 07-24-2016 | Was traded by the Milwaukee Brewers to the New York (A) Yankees in exchange for SP D. Walton. |
| 11-25-2016 | Was traded by the New York (A) Yankees to the Kansas City Royals, along with RF J. Bardo, in exchange for SP J. Davis, RF J. Kerr, SP I. Quiñones, SP K. Davis. |
| 01-01-2017 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 6 (6). |
| 01-01-2018 | OSA scouting updated ratings (potential): Stuff: 8 (8); Movement: 8 (8); Control: 6 (6). |