| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 8 | 9 | 0 | 0 | 136.0 | 135 | 42 | 119 | 61 | 4.04 | 1.301 | 25.2 |
| 2022 | 0 | 0 | 0 | 0 | 6.0 | 7 | 5 | 3 | 6 | 9.00 | 2.000 | -5.1 |
| 2020 | 1 | 0 | 0 | 0 | 1.7 | 0 | 0 | 1 | 0 | 0.00 | 0.000 | 8.1 |
| Date | News |
| 7/16/22 | Blue Jays acquire LHP Foster Griffin in trade with Royals. The Toronto Blue Jays acquired left-hander Foster Griffin from the Kansas City Royals on Saturday in exchange for minor league right-hander Jonatan Bernal. The Blue Jays optioned Griffin to Triple-A Buffalo. Toronto also recalled right-hander Jeremy Beasley from Buffalo and designated right-hander Sergio Romo for assignment. Source: https://www.bignewsnetwork.com/news/272622840/blue... |
| 7/16/22 | Blue Jays acquire LHP Foster Griffin in trade with Royals. The Toronto Blue Jays acquired left-hander Foster Griffin from the Kansas City Royals on Saturday in exchange for minor league right-hander Jonatan Bernal. The Blue Jays optioned Griffin to Triple-A Buffalo. Toronto also recalled right-hander Jeremy Beasley from Buffalo and designated right-hander Sergio Romo for assignment. Source: https://www.bignewsnetwork.com/news/272622840/blue... |
| 7/10/22 | Kansas City Royals put Heasley on IL, recall Foster Griffin ... with more moves to come. The Royals recalled one left-hander to fill Heasley’s roster spot, while another arrived but hasn’t been added to the roster. Source: https://sports.yahoo.com/kansas-city-royals-put-he... |
| 5/20/22 | From ‘broken’ to back in Kansas City, lefty Foster Griffin returns to the KC Royals. The Royals made five roster moves ahead of Friday night’s game against the Minnesota Twins. Source: https://sports.yahoo.com/broken-back-kansas-city-l... |
| 3/28/22 | Foster Griffin, injured in 'emotional' MLB debut, motivated to make Royals roster again. It was an emotional day for sure, trying to balance the joy of finally getting to the big leagues and making the debut and, obviously, the lows of coming out with an injury and an injury so extensive that I had to get Tommy John surgery,” Griffin said. The road back kind of went by fast, but at times went by slow. I got to throw almost 50 rehab innings last year in the minor leagues, which was nice. Source: https://www.kansas.com/sports/mlb/kansas-city-roya... |