Born in Orlando, FL in 1995, Foster Griffin made his senior debut with Kansas City Royals in 2020 and also played for Toronto Blue Jays, Yomiuri Giants and Cleveland Guardians. He played as a starting pitcher. Lineball holds stats from 42 of his games across 2020–2026.
Official accounts listed on Wikidata.
| GP | GS | W | L | W% | WAR | ERA | WHIP | IP | K | BB | K/BB | H | R | ER | SV | HLD | BLSV | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 KC | 1 | 0 | 1 | 0 | 1.000 | 0.1 | 0.00 | 0.00 | 1.2 | 1 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2022 KC | 5 | 0 | 0 | 0 | .000 | -0.2 | 12.46 | 2.31 | 4.1 | 2 | 4 | 0.5 | 6 | 7 | 6 | 0 | 0 | 0 |
| 2022 TOR | 1 | 0 | 0 | 0 | .000 | 0.1 | 0.00 | 1.00 | 2.0 | 2 | 1 | 2.0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2022 | 6 | 0 | 0 | 0 | .000 | -0.2 | 8.53 | 1.89 | 6.1 | 4 | 5 | 0.8 | 7 | 7 | 6 | 0 | 0 | 0 |
| 2026 WSH | 22 | 22 | 12 | 3 | .800 | 3.3 | 3.06 | 1.07 | 129.1 | 116 | 30 | 3.9 | 109 | 49 | 44 | 0 | 0 | 0 |
| 2026 CLE | 9 | 9 | 3 | 3 | .500 | -0.1 | 5.19 | 1.62 |
Includes finals, playoffs and exhibition games, so totals run higher than regular-season figures.
| Season | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 MLBCleveland Guardians / National All-Stars / Washington Nationals | 35 | 73 | 175 | 23 | 184.0 | 552 | 3,003 | 80 | 175 | 1,988 | 45 |
| 2022 MLBKansas City Royals / Toronto Blue Jays | 6 | 6 | 7 | 0 | 6.3 | 19 | 111 | 7 | 4 | 66 | 5 |
| 2020 MLBKansas City Royals | 1 | 0 | 0 | 0 | 1.7 | 5 | 23 | 0 | 1 | 14 | 0 |
| Career3 seasons | 42 | 79 | 182 | 23 | 192 | 576 | 3,137 | 87 | 180 | 2,068 | 50 |
| Game | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Postseason v Tampa Bay RaysL 3-7 18 Oct | 1 | 4 | 0 | 3.7 | 11 | 44 | 1 | 5 | 31 | 0 |
| Postseason @ Tampa Bay RaysW 7-3 13 Oct | 2 | 5 | 0 | 4 | 12 | 63 | 2 | 3 | 42 | 0 |
| Postseason @ Chicago White SoxW 9-3 8 Oct | 1 | 2 | 0 | 2.7 | 8 | 53 | 1 | 7 | 39 | 0 |
| 24 Sept @ Boston Red SoxL 0-1 24 Sept | 1 | 10 | 0 | 6 | 18 | 83 | 1 | 7 | 65 | 0 |
| 16 Sept v Chicago White SoxW 7-6 16 Sept | 2 | 5 | 0 | 4 | 12 | 83 | 2 | 5 | 47 | 2 |
| 10 Sept @ Baltimore OriolesL 5-9 10 Sept | 8 | 7 | 0 | 2.3 | 7 | 62 | 8 | 4 | 39 | 2 |
| 5 Sept v Detroit TigersW 4-3 5 Sept | 3 | 8 | 0 | 6 | 18 | 92 | 3 | 3 | 58 | 2 |
| 30 Aug v Kansas City RoyalsL 3-8 30 Aug | 2 | 4 | 0 | 5 | 15 | 82 | 2 | 4 | 50 | 1 |
| 24 Aug @ Colorado RockiesW 7-2 24 Aug | 2 | 5 | 0 | 5 | 15 | 105 | 2 | 4 | 71 | 3 |
| 19 Aug v San Francisco GiantsW 8-1 19 Aug | 1 | 5 | 1 | 6 | 18 | 101 | 1 | 6 | 66 | 2 |
| 13 Aug @ Detroit TigersW 6-4 13 Aug | 1 | 4 | 1 | 5 | 15 | 83 | 3 | 3 | 55 | 1 |
| 7 Aug v New York MetsL 6-13 7 Aug | 5 | 7 | 2 | 4 | 12 | 88 | 5 | 6 | 54 | 2 |
| 1 Aug @ Atlanta BravesL 2-6 1 Aug | 6 | 9 | 2 | 5.3 | 16 | 78 | 6 | 3 | 50 | 2 |
| 26 July v Arizona DiamondbacksW 5-3 26 July | 3 | 6 | 0 | 6.7 | 20 | 108 | 3 | 2 | 66 | 1 |
| 20 July @ AthleticsW 5-2 20 July | 1 | 8 | 0 | 7 | 21 | 97 | 1 | 2 | 65 | 1 |
| Rd 27 v Houston AstrosW 8-2 9 July | 1 | 5 | 0 | 7 | 21 | 99 | 1 | 9 | 71 | 0 |
| Rd 27 v Pittsburgh PiratesW 9-5 4 July | 1 | 4 | 1 | 5 | 15 | 83 | 1 | 2 | 57 | 1 |
| Rd 26 @ Baltimore OriolesW 4-3 28 June | 0 | 3 | 0 | 7 | 21 | 112 | 1 | 9 | 75 | 2 |
| Rd 25 v Philadelphia PhilliesW 4-1 23 June | 1 | 4 | 1 | 7.3 | 22 | 105 | 1 | 9 | 74 | 0 |
| Rd 24 v Kansas City RoyalsW 6-4 17 June | 1 | 6 | 0 | 6 | 18 | 100 | 1 | 6 | 74 | 2 |
| Rd 23 @ San Francisco GiantsL 10-11 11 June | 1 | 6 | 1 | 6 | 18 | 100 | 1 | 5 | 72 | 0 |
| Rd 23 @ Arizona DiamondbacksW 14-1 6 June | 1 | 2 | 1 | 5 | 15 | 62 | 1 | 4 | 43 | 0 |
| Rd 22 v San Diego PadresW 9-4 31 May | 3 | 5 | 3 | 5 | 15 | 90 | 3 | 5 | 58 | 2 |
| Rd 21 @ Atlanta BravesW 2-1 25 May | 0 | 3 | 0 | 6 | 18 | 90 | 0 | 6 | 60 | 1 |
| Rd 20 v New York MetsW 9-6 20 May | 5 | 8 | 2 | 5 | 15 | 97 | 5 | 5 | 67 | 0 |
| Rd 20 @ Cincinnati RedsL 1-15 15 May | 9 | 7 | 2 | 4.3 | 13 | 92 | 9 | 7 | 58 | 3 |
| Rd 19 @ Miami MarlinsW 3-2 9 May | 1 | 4 | 1 | 7 | 21 | 103 | 2 | 9 | 74 | 1 |
| Rd 18 v Milwaukee BrewersL 1-4 3 May | 0 | 3 | 0 | 6 | 18 | 97 | 3 | 3 | 57 | 4 |
| Rd 17 @ Chicago White SoxW 2-1 27 Apr | 0 | 2 | 0 | 7 | 21 | 95 | 0 | 8 | 61 | 2 |
| Rd 16 v Atlanta BravesW 11-4 22 Apr | 3 | 5 | 2 | 6 | 18 | 96 | 3 | 3 | 65 | 1 |
| Rd 16 @ Pittsburgh PiratesW 8-7 17 Apr | 4 | 8 | 1 | 5.3 | 16 | 89 | 4 | 7 | 60 | 1 |
| Rd 15 @ Milwaukee BrewersW 3-1 12 Apr | 0 | 1 | 0 | 5.3 | 16 | 80 | 0 | 1 | 50 | 3 |
| Rd 14 v Los Angeles DodgersL 6-8 6 Apr | 1 | 5 | 1 | 5 | 15 | 95 | 1 | 6 | 52 | 3 |
| Rd 13 @ Philadelphia PhilliesW 13-2 31 Mar | 2 | 5 | 1 | 5 | 15 | 86 | 2 | 5 | 55 | 0 |
Stats from official league and public sports feeds. Updated hourly. Career and honours from Wikidata (CC0).
| 43.1 |
| 42 |
| 15 |
| 2.8 |
| 55 |
| 27 |
| 25 |
| 0 |
| 0 |
| 0 |
| 2026 | 31 | 31 | 15 | 6 | .714 | 3.3 | 3.60 | 1.21 | 172.2 | 158 | 45 | 3.5 | 164 | 76 | 69 | 0 | 0 | 0 |
| Career | 38 | 31 | 16 | 6 | .727 | -- | 3.74 | 1.22 | 180.2 | 163 | 50 | 3.3 | 171 | 83 | 75 | 0 | 0 | 0 |
| GP | GS | W | L | W% | WAR | ERA | WHIP | IP | K | BB | K/BB | H | R | ER | SV | HLD | BLSV | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 CLE | 3 | 1 | 1 | 0 | 1.000 | 0.0 | 3.48 | 1.06 | 10.1 | 15 | 0 | 0.0 | 11 | 4 | 4 | 0 | 0 | 0 |
| Career | 3 | 1 | 1 | 0 | 1.000 | 0.0 | 3.48 | 1.06 | 10.1 | 15 | 0 | 0.0 | 11 | 4 | 4 | 0 | 0 | 0 |
| P | TBF | P-TBF | OBA | OOBP | OSLUG | OOPS | 2B | 3B | HR | TB | RBI | BH | SH | SF | IBB | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 KC | 23 | 6 | 3.833 | .000 | .000 | .000 | .000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2022 KC | 84 | 24 | 3.500 | .375 | .500 | .625 | 1.125 | 4 | 0 | 0 | 10 | 6 | 1 | 2 | 1 | 0 |
| 2022 TOR | 27 | 8 | 3.375 | .143 | .250 | .286 | .536 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
| 2022 | 111 | 32 | 3.469 | .304 | .433 | .522 | .955 | 5 | 0 | 0 | 12 | 6 | 1 | 2 | 1 | 0 |
| 2026 WSH | 2054 | 524 | 3.920 | .226 | .282 | .381 | .663 | 18 | 0 | 19 | 184 | 46 | 8 | 2 | 1 | 0 |
| 2026 CLE | 779 | 197 | 3.954 | .309 | .365 | .466 | .832 | 12 | 2 | 4 | 83 | 25 | 2 | 0 | 2 | 0 |
| 2026 | 2833 | 721 | 3.929 | .248 | .305 | .404 | .709 | 30 | 2 | 23 | 267 | 71 | 10 | 2 | 3 | 0 |
| Career | 2967 | 759 | 3.909 | .248 | .307 | .404 | .712 | 35 | 2 | 23 | 279 | 77 | 11 | 4 | 4 | 0 |
| P/S | P/I | K/9 | QS | CG | SHO | GSC | GB | FB | G/F | IR | IRS | WP | BK | SB | CS | RSUP | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 KC | 0.0 | 13.8 | 5.4 | 0 | 0 | 0 | 0.0 | 4 | 1 | 4.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 |
| 2022 KC | 0.0 | 19.4 | 4.2 | 0 | 0 | 0 | 0.0 | 8 | 9 | 0.9 | 0 | 0 | 0 | 0 | 1 | 0 | 0.0 |
| 2022 TOR | 0.0 | 13.5 | 9.0 | 0 | 0 | 0 | 0.0 | 3 | 2 | 1.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 |
| 2022 | 0.0 | 17.5 | 5.7 | 0 | 0 | 0 | 0.0 | 11 | 11 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.0 |
| 2026 WSH | 93.4 | 15.9 | 8.1 | 12 | 0 | 0 | 53.5 | 172 | 198 | 0.9 | 0 | 0 | 3 | 1 | 6 | 0 | 135.0 |
| 2026 CLE | 86.6 | 18.0 | 8.7 | 3 | 0 | 0 | 53.5 | 59 | 79 | 0.7 | 0 | 0 | 0 | 0 | 0 | 2 | 46.0 |
| 2026 | 91.4 | 16.4 | 8.2 | 15 | 0 | 0 | 53.5 | 231 | 277 | 0.8 | 0 | 0 | 3 | 1 | 6 | 2 | 181.0 |
| Career | 91.4 | 16.4 | 8.1 | 15 | 0 | 0 | 0.0 | 246 | 289 | 0.9 | 0 | 0 | 3 | 1 | 7 | 2 | 181.0 |
| Split | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| AwayHome or away, 14W | 22 | 1.9 | 4.3 | 0.5 | 4.6 | 13.7 | 73.8 | 2.1 | 4.5 | 49.5 | 1.1 |
| HomeHome or away, 11W | 20 | 1.9 | 4.3 | 0.7 | 4.6 | 13.7 | 75.7 | 2.0 | 4.1 | 49.0 | 1.3 |
| WinsResult, 25W | 25 | 1.6 | 4.5 | 0.6 | 5.5 | 16.4 | 87.8 | 1.7 | 5.0 | 58.7 | 1.1 |
| LossesResult, 0W | 17 | 2.4 | 4.1 | 0.5 | 3.2 | 9.7 | 55.4 | 2.6 | 3.3 | 35.4 | 1.3 |
| Regular seasonStage, 25W | 42 | 1.9 | 4.3 | 0.5 | 4.6 | 13.7 | 74.7 | 2.1 | 4.3 | 49.2 | 1.2 |
| Atlanta BravesOpponent, 2W | 3 | 3.0 | 5.7 | 1.3 | 5.8 | 17.3 | 88.0 | 3.0 | 4.0 | 58.3 | 1.3 |
| Chicago White SoxOpponent, 3W | 3 | 1.0 | 3.0 | 0.0 | 4.6 | 13.7 | 77.0 | 1.0 | 6.7 | 49.0 | 1.3 |
| Detroit TigersOpponent, 3W | 3 | 1.3 | 4.0 | 0.3 | 4.2 | 12.7 | 66.0 | 2.0 | 2.3 | 42.3 | 1.0 |
| Tampa Bay RaysOpponent, 1W | 3 | 1.0 | 3.3 | 0.0 | 3.2 | 9.7 | 44.7 | 1.0 | 3.3 | 29.7 | 0.3 |
| Arizona DiamondbacksOpponent, 2W | 2 | 2.0 | 4.0 | 0.5 | 5.8 | 17.5 | 85.0 | 2.0 | 3.0 | 54.5 | 0.5 |
| Baltimore OriolesOpponent, 1W | 2 | 4.0 | 5.0 | 0.0 | 4.7 | 14.0 | 87.0 | 4.5 | 6.5 | 57.0 | 2.0 |
| Kansas City RoyalsOpponent, 1W | 2 | 1.5 | 5.0 | 0.0 | 5.5 | 16.5 | 91.0 | 1.5 | 5.0 | 62.0 | 1.5 |
| Milwaukee BrewersOpponent, 1W | 2 | 0.0 | 2.0 | 0.0 | 5.7 | 17.0 | 88.5 | 1.5 | 2.0 | 53.5 | 3.5 |
| Minnesota TwinsOpponent, 0W | 2 | 2.0 | 1.5 | 0.0 | 1.0 | 3.0 | 15.0 | 2.0 | 0.0 | 8.5 | 1.0 |
| New York MetsOpponent, 1W | 2 | 5.0 | 7.5 | 2.0 | 4.5 | 13.5 | 92.5 | 5.0 | 5.5 | 60.5 | 1.0 |
| Philadelphia PhilliesOpponent, 2W | 2 | 1.5 | 4.5 | 1.0 | 6.2 | 18.5 | 95.5 | 1.5 | 7.0 | 64.5 | 0.0 |
| Pittsburgh PiratesOpponent, 2W | 2 | 2.5 | 6.0 | 1.0 | 5.2 | 15.5 | 86.0 | 2.5 | 4.5 | 58.5 | 1.0 |
| San Francisco GiantsOpponent, 1W | 2 | 1.0 | 5.5 | 1.0 | 6.0 | 18.0 | 101 | 1.0 | 5.5 | 69.0 | 1.0 |
| American All-StarsOpponent, 0W | 1 | 0.0 | 0.0 | 0.0 | 1.0 | 3.0 | 10.0 | 0.0 | 2.0 | 7.0 | 0.0 |
| AthleticsOpponent, 1W | 1 | 1.0 | 8.0 | 0.0 | 7.0 | 21.0 | 97.0 | 1.0 | 2.0 | 65.0 | 1.0 |
| Boston Red SoxOpponent, 0W | 1 | 1.0 | 10.0 | 0.0 | 6.0 | 18.0 | 83.0 | 1.0 | 7.0 | 65.0 | 0.0 |
| Cincinnati RedsOpponent, 0W | 1 | 9.0 | 7.0 | 2.0 | 4.3 | 13.0 | 92.0 | 9.0 | 7.0 | 58.0 | 3.0 |
| Cleveland GuardiansOpponent, 0W | 1 | 0.0 | 0.0 | 0.0 | 0.7 | 2.0 | 13.0 | 1.0 | 0.0 | 6.0 | 1.0 |
| Colorado RockiesOpponent, 1W | 1 | 2.0 | 5.0 | 0.0 | 5.0 | 15.0 | 105 | 2.0 | 4.0 | 71.0 | 3.0 |
| Houston AstrosOpponent, 1W | 1 | 1.0 | 5.0 | 0.0 | 7.0 | 21.0 | 99.0 | 1.0 | 9.0 | 71.0 | 0.0 |
| Los Angeles AngelsOpponent, 0W | 1 | 2.0 | 3.0 | 0.0 | 1.0 | 3.0 | 28.0 | 2.0 | 1.0 | 19.0 | 0.0 |
| Los Angeles DodgersOpponent, 0W | 1 | 1.0 | 5.0 | 1.0 | 5.0 | 15.0 | 95.0 | 1.0 | 6.0 | 52.0 | 3.0 |
| Miami MarlinsOpponent, 1W | 1 | 1.0 | 4.0 | 1.0 | 7.0 | 21.0 | 103 | 2.0 | 9.0 | 74.0 | 1.0 |
| Oakland AthleticsOpponent, 0W | 1 | 0.0 | 0.0 | 0.0 | 0.7 | 2.0 | 13.0 | 0.0 | 1.0 | 8.0 | 1.0 |
| San Diego PadresOpponent, 1W | 1 | 3.0 | 5.0 | 3.0 | 5.0 | 15.0 | 90.0 | 3.0 | 5.0 | 58.0 | 2.0 |
| Nationals Park, WashingtonGround, 8W | 10 | 1.9 | 5.1 | 1.0 | 5.9 | 17.7 | 97.0 | 2.2 | 5.0 | 64.1 | 1.4 |
| Progressive Field, ClevelandGround, 3W | 7 | 2.0 | 4.7 | 0.4 | 4.2 | 12.6 | 71.9 | 2.1 | 4.1 | 44.6 | 1.4 |
| Kauffman Stadium, Kansas CityGround, 0W | 3 | 1.3 | 1.0 | 0.0 | 0.9 | 2.7 | 14.3 | 1.3 | 0.3 | 8.3 | 1.0 |
| Citizens Bank Park, PhiladelphiaGround, 1W | 2 | 1.0 | 2.5 | 0.5 | 3.0 | 9.0 | 48.0 | 1.0 | 3.5 | 31.0 | 0.0 |
| Comerica Park, DetroitGround, 2W | 2 | 0.5 | 2.0 | 0.5 | 3.3 | 10.0 | 53.0 | 1.5 | 2.0 | 34.5 | 0.5 |
| Oriole Park at Camden Yards, BaltimoreGround, 1W | 2 | 4.0 | 5.0 | 0.0 | 4.7 | 14.0 | 87.0 | 4.5 | 6.5 | 57.0 | 2.0 |
| Rate Field, ChicagoGround, 2W | 2 | 0.5 | 2.0 | 0.0 | 4.8 | 14.5 | 74.0 | 0.5 | 7.5 | 50.0 | 1.0 |
| Tropicana Field, St. PetersburgGround, 1W | 2 | 1.0 | 3.0 | 0.0 | 3.0 | 9.0 | 45.0 | 1.0 | 2.5 | 29.0 | 0.5 |
| Truist Park, AtlantaGround, 1W | 2 | 3.0 | 6.0 | 1.0 | 5.7 | 17.0 | 84.0 | 3.0 | 4.5 | 55.0 | 1.5 |
| American Family Field, MilwaukeeGround, 1W | 1 | 0.0 | 1.0 | 0.0 | 5.3 | 16.0 | 80.0 | 0.0 | 1.0 | 50.0 | 3.0 |
| Angel Stadium, AnaheimGround, 0W | 1 | 2.0 | 3.0 | 0.0 | 1.0 | 3.0 | 28.0 | 2.0 | 1.0 | 19.0 | 0.0 |
| Chase Field, PhoenixGround, 1W | 1 | 1.0 | 2.0 | 1.0 | 5.0 | 15.0 | 62.0 | 1.0 | 4.0 | 43.0 | 0.0 |
| Coors Field, DenverGround, 1W | 1 | 2.0 | 5.0 | 0.0 | 5.0 | 15.0 | 105 | 2.0 | 4.0 | 71.0 | 3.0 |
| Fenway Park, BostonGround, 0W | 1 | 1.0 | 10.0 | 0.0 | 6.0 | 18.0 | 83.0 | 1.0 | 7.0 | 65.0 | 0.0 |
| Great American Ball Park, CincinnatiGround, 0W | 1 | 9.0 | 7.0 | 2.0 | 4.3 | 13.0 | 92.0 | 9.0 | 7.0 | 58.0 | 3.0 |
| loanDepot park, MiamiGround, 1W | 1 | 1.0 | 4.0 | 1.0 | 7.0 | 21.0 | 103 | 2.0 | 9.0 | 74.0 | 1.0 |
| Oracle Park, San FranciscoGround, 0W | 1 | 1.0 | 6.0 | 1.0 | 6.0 | 18.0 | 100 | 1.0 | 5.0 | 72.0 | 0.0 |
| PNC Park, PittsburghGround, 1W | 1 | 4.0 | 8.0 | 1.0 | 5.3 | 16.0 | 89.0 | 4.0 | 7.0 | 60.0 | 1.0 |
| Sutter Health Park, SacramentoGround, 1W | 1 | 1.0 | 8.0 | 0.0 | 7.0 | 21.0 | 97.0 | 1.0 | 2.0 | 65.0 | 1.0 |
