Loss
Rick Porcello · Season-by-season history
Loss over time
- Detroit Tigers · MLB
- Boston Red Sox · MLB
| Season | Team | League | Loss |
|---|---|---|---|
| 2019 |  Boston Red Sox |
MLB | 12 |
| 2018 | Boston Red Sox |
MLB | 7 |
| 2017 | Boston Red Sox |
MLB | 17 |
| 2016 | Boston Red Sox |
MLB | 4 |
| 2015 | Boston Red Sox |
MLB | 15 |
| 2014 |  Detroit Tigers |
MLB | 13 |
| 2013 | Detroit Tigers |
MLB | 8 |
| 2012 | Detroit Tigers |
MLB | 12 |
| 2011 | Detroit Tigers |
MLB | 9 |
| 2010 | Detroit Tigers |
MLB | 12 |
| 2009 | Detroit Tigers |
MLB | 9 |