
Kyle Keller
Free Agent (AAA)P
Age: 33
Bats/Throws: R/R
6'4" / 205
DOB: 4/28/1993
(33 years, 6 months, 8 days)
P
| Season | Total |
| Team | - - - |
| Level | MLB |
| G | 44 |
| GS | 0 |
| IP | 46.1 |
| K% | 22.4% |
| BB% | 15.0% |
| GB% | 29.1% |
| ERA | 5.83 |
| FIP | 7.00 |
| WAR | -0.8 |
RosterResource
| Draft: | 2015, Rd: 18, Pick: 11, Ovr: 536 |
| Draft Team: | Miami Marlins |
| School: | Southeastern Louisiana |
| Contract | 1 yr, TBD (2026) (RR) |
MiLB | AAV: N/A |
Service Time
0.164MiLB Options
0
Free Agent
2032
Arb Eligible
2029
News
Rotowire: Keller agreed to a minor-league contract with the Red Sox on Tuesday, Will Sammon of The Athletic reports. (2/3/2026)
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| Season | Handedness | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | vs L | 10.13 | 6.08 | 1.67 | 2.70 | 23.1% | 13.8% | 9.2% | .255 | 1.73 | .278 | 54.3% | 7.07 | 5.68 |
| 2021 | vs R | 9.45 | 5.85 | 1.62 | 2.25 | 23.3% | 14.4% | 8.9% | .219 | 1.45 | .234 | 76.9% | 6.87 | 6.00 |
| Season | Home / Away | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Home | 9.92 | 6.61 | 1.50 | 1.10 | 23.7% | 15.8% | 7.9% | .222 | 1.59 | .279 | 66.1% | 4.95 | 5.84 |
| 2021 | Away | 9.53 | 5.29 | 1.80 | 3.71 | 22.8% | 12.7% | 10.1% | .246 | 1.53 | .225 | 69.3% | 8.88 | 5.91 |
| 2021 | Home vs L | 12.60 | 5.40 | 2.33 | 3.60 | 23.3% | 10.0% | 13.3% | .346 | 2.40 | .412 | 49.0% | 7.97 | 5.59 |
| 2021 | Home vs R | 8.74 | 7.15 | 1.22 | 0.00 | 23.9% | 19.6% | 4.3% | .135 | 1.24 | .192 | 78.6% | 3.61 | 5.95 |
| 2021 | Away vs L | 8.64 | 6.48 | 1.33 | 2.16 | 22.9% | 17.1% | 5.7% | .172 | 1.32 | .158 | 61.0% | 6.53 | 5.74 |
| 2021 | Away vs R | 10.38 | 4.15 | 2.50 | 5.19 | 22.7% | 9.1% | 13.6% | .306 | 1.73 | .286 | 75.0% | 11.13 | 6.07 |
| Season | Monthly | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | May | 10.80 | 8.10 | 1.33 | 5.40 | 26.7% | 20.0% | 6.7% | .167 | 1.50 | .000 | 90.9% | 11.27 | 5.06 |
| 2021 | Jul | 11.00 | 4.00 | 2.75 | 2.00 | 27.5% | 10.0% | 17.5% | .229 | 1.33 | .273 | 68.6% | 5.28 | 4.35 |
| 2021 | Aug | 7.71 | 8.49 | 0.91 | 2.31 | 17.5% | 19.3% | -1.8% | .233 | 1.80 | .233 | 60.6% | 8.40 | 8.38 |
| 2021 | Sept/Oct | 10.61 | 3.86 | 2.75 | 1.93 | 25.6% | 9.3% | 16.3% | .263 | 1.50 | .320 | 73.8% | 5.21 | 4.50 |
| 2021 | 1st Half | 14.14 | 7.71 | 1.83 | 3.86 | 32.4% | 17.6% | 14.7% | .214 | 1.71 | .214 | 76.9% | 8.17 | 4.62 |
| 2021 | 2nd Half | 8.54 | 5.47 | 1.56 | 2.05 | 20.7% | 13.2% | 7.4% | .240 | 1.52 | .261 | 65.6% | 6.63 | 6.21 |
| Season | Leverage | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Low Leverage | 10.46 | 4.73 | 2.21 | 2.36 | 26.5% | 12.0% | 14.5% | .210 | 1.31 | .226 | 81.6% | 6.17 | 5.01 |
| 2021 | Medium Leverage | 6.00 | 12.00 | 0.50 | 3.00 | 11.4% | 22.9% | -11.4% | .320 | 2.67 | .316 | 59.2% | 11.17 | 10.07 |
| 2021 | High Leverage | 13.50 | 0.00 | 1.00 | 0.00 | 33.3% | 0.0% | 33.3% | .333 | 1.50 | .500 | -200.0% | 0.17 | 2.82 |
| Season | Situational | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Bases Empty | 10.80 | 5.94 | 1.82 | 2.70 | 24.7% | 13.6% | 11.1% | .212 | 1.50 | .220 | 100.0% | 7.37 | 5.59 |
| 2021 | Men on Base | 8.64 | 5.94 | 1.45 | 2.16 | 21.6% | 14.9% | 6.8% | .258 | 1.62 | .286 | 26.8% | 6.53 | 6.16 |
| 2021 | Men In Scoring | 10.29 | 10.29 | 1.00 | 2.57 | 21.1% | 21.1% | 0.0% | .310 | 2.43 | .368 | 13.2% | 8.46 | 7.01 |
| Season | Through Count | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Through 3 - 0 | 0.00 | 81.00 | 0.00 | 0.00 | 0.0% | 75.0% | -75.0% | .000 | 9.00 | .000 | 100.0% | 30.17 | 32.82 |
| 2021 | Through 3 - 1 | 0.00 | 33.75 | 0.00 | 0.00 | 0.0% | 55.6% | -55.6% | .000 | 3.75 | .000 | 80.0% | 14.42 | 18.39 |
| 2021 | Through 3 - 2 | 14.73 | 31.91 | 0.46 | 4.91 | 22.2% | 48.1% | -25.9% | .214 | 4.36 | .167 | 75.8% | 17.62 | 13.90 |
| 2021 | Through 2 - 0 | 2.08 | 16.62 | 0.13 | 0.00 | 4.3% | 34.8% | -30.4% | .067 | 2.08 | .071 | 100.0% | 8.25 | 11.50 |
| 2021 | Through 1 - 0 | 7.62 | 9.00 | 0.85 | 2.77 | 17.2% | 20.3% | -3.1% | .163 | 1.62 | .118 | 100.0% | 8.94 | 8.06 |
| 2021 | Through 2 - 1 | 6.35 | 12.71 | 0.50 | 4.76 | 12.9% | 25.8% | -12.9% | .136 | 1.94 | .000 | 64.1% | 13.41 | 9.95 |
| 2021 | Through 1 - 1 | 11.37 | 7.82 | 1.45 | 2.13 | 27.6% | 19.0% | 8.6% | .174 | 1.50 | .185 | 57.0% | 6.56 | 5.58 |
| 2021 | Through 0 - 1 | 12.50 | 4.50 | 2.78 | 2.00 | 30.9% | 11.1% | 19.8% | .246 | 1.44 | .325 | 51.3% | 5.28 | 4.25 |
| 2021 | Through 2 - 2 | 15.00 | 12.00 | 1.25 | 3.00 | 32.6% | 26.1% | 6.5% | .121 | 1.78 | .067 | 62.5% | 8.50 | 5.74 |
| 2021 | Through 1 - 2 | 14.59 | 5.84 | 2.50 | 0.73 | 37.7% | 15.1% | 22.6% | .182 | 1.30 | .304 | 57.7% | 3.17 | 3.26 |
| 2021 | Through 0 - 2 | 15.55 | 2.45 | 6.33 | 0.82 | 45.2% | 7.1% | 38.1% | .132 | 0.73 | .222 | 39.5% | 1.99 | 2.09 |
| Season | SP / RP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | As Reliever | 9.72 | 5.94 | 1.64 | 2.43 | 23.2% | 14.2% | 9.0% | .234 | 1.56 | .253 | 67.6% | 6.95 | 5.87 |
| Season | Shifts | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | No Shift | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .265 | 1.13 | .265 | 100.0% | 3.17 | 6.70 |
| 2021 | Shift - All | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .245 | 1.06 | .245 | 100.0% | 3.17 | 6.59 |
| 2021 | Shift - Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .222 | 0.94 | .222 | 100.0% | 3.17 | 6.48 |
| 2021 | Shift - Non Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .500 | 3.00 | .500 | 100.0% | 3.17 | 8.46 |
| Season | TTO | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | 1st Through Order as RP | 9.64 | 6.06 | 1.59 | 2.48 | 22.9% | 14.4% | 8.5% | .238 | 1.59 | .256 | 67.6% | 7.09 | 5.94 |
| 2021 | 2nd Through Order as RP | 13.50 | 0.00 | 1.00 | 0.00 | 50.0% | 0.0% | 50.0% | .000 | 0.00 | .000 | 100.0% | 0.17 | 2.82 |
| Season | Handedness | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | vs L | 10.13 | 6.08 | 1.67 | 2.70 | 23.1% | 13.8% | 9.2% | .255 | 1.73 | .278 | 54.3% | 7.07 | 5.68 |
| 2021 | vs R | 9.45 | 5.85 | 1.62 | 2.25 | 23.3% | 14.4% | 8.9% | .219 | 1.45 | .234 | 76.9% | 6.87 | 6.00 |
| Season | Home / Away | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Home | 9.92 | 6.61 | 1.50 | 1.10 | 23.7% | 15.8% | 7.9% | .222 | 1.59 | .279 | 66.1% | 4.95 | 5.84 |
| 2021 | Away | 9.53 | 5.29 | 1.80 | 3.71 | 22.8% | 12.7% | 10.1% | .246 | 1.53 | .225 | 69.3% | 8.88 | 5.91 |
| 2021 | Home vs L | 12.60 | 5.40 | 2.33 | 3.60 | 23.3% | 10.0% | 13.3% | .346 | 2.40 | .412 | 49.0% | 7.97 | 5.59 |
| 2021 | Home vs R | 8.74 | 7.15 | 1.22 | 0.00 | 23.9% | 19.6% | 4.3% | .135 | 1.24 | .192 | 78.6% | 3.61 | 5.95 |
| 2021 | Away vs L | 8.64 | 6.48 | 1.33 | 2.16 | 22.9% | 17.1% | 5.7% | .172 | 1.32 | .158 | 61.0% | 6.53 | 5.74 |
| 2021 | Away vs R | 10.38 | 4.15 | 2.50 | 5.19 | 22.7% | 9.1% | 13.6% | .306 | 1.73 | .286 | 75.0% | 11.13 | 6.07 |
| Season | Monthly | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | May | 10.80 | 8.10 | 1.33 | 5.40 | 26.7% | 20.0% | 6.7% | .167 | 1.50 | .000 | 90.9% | 11.27 | 5.06 |
| 2021 | Jul | 11.00 | 4.00 | 2.75 | 2.00 | 27.5% | 10.0% | 17.5% | .229 | 1.33 | .273 | 68.6% | 5.28 | 4.35 |
| 2021 | Aug | 7.71 | 8.49 | 0.91 | 2.31 | 17.5% | 19.3% | -1.8% | .233 | 1.80 | .233 | 60.6% | 8.40 | 8.38 |
| 2021 | Sept/Oct | 10.61 | 3.86 | 2.75 | 1.93 | 25.6% | 9.3% | 16.3% | .263 | 1.50 | .320 | 73.8% | 5.21 | 4.50 |
| 2021 | 1st Half | 14.14 | 7.71 | 1.83 | 3.86 | 32.4% | 17.6% | 14.7% | .214 | 1.71 | .214 | 76.9% | 8.17 | 4.62 |
| 2021 | 2nd Half | 8.54 | 5.47 | 1.56 | 2.05 | 20.7% | 13.2% | 7.4% | .240 | 1.52 | .261 | 65.6% | 6.63 | 6.21 |
| Season | Leverage | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Low Leverage | 10.46 | 4.73 | 2.21 | 2.36 | 26.5% | 12.0% | 14.5% | .210 | 1.31 | .226 | 81.6% | 6.17 | 5.01 |
| 2021 | Medium Leverage | 6.00 | 12.00 | 0.50 | 3.00 | 11.4% | 22.9% | -11.4% | .320 | 2.67 | .316 | 59.2% | 11.17 | 10.07 |
| 2021 | High Leverage | 13.50 | 0.00 | 1.00 | 0.00 | 33.3% | 0.0% | 33.3% | .333 | 1.50 | .500 | -200.0% | 0.17 | 2.82 |
| Season | Situational | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Bases Empty | 10.80 | 5.94 | 1.82 | 2.70 | 24.7% | 13.6% | 11.1% | .212 | 1.50 | .220 | 100.0% | 7.37 | 5.59 |
| 2021 | Men on Base | 8.64 | 5.94 | 1.45 | 2.16 | 21.6% | 14.9% | 6.8% | .258 | 1.62 | .286 | 26.8% | 6.53 | 6.16 |
| 2021 | Men In Scoring | 10.29 | 10.29 | 1.00 | 2.57 | 21.1% | 21.1% | 0.0% | .310 | 2.43 | .368 | 13.2% | 8.46 | 7.01 |
| Season | Through Count | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | Through 3 - 0 | 0.00 | 81.00 | 0.00 | 0.00 | 0.0% | 75.0% | -75.0% | .000 | 9.00 | .000 | 100.0% | 30.17 | 32.82 |
| 2021 | Through 3 - 1 | 0.00 | 33.75 | 0.00 | 0.00 | 0.0% | 55.6% | -55.6% | .000 | 3.75 | .000 | 80.0% | 14.42 | 18.39 |
| 2021 | Through 3 - 2 | 14.73 | 31.91 | 0.46 | 4.91 | 22.2% | 48.1% | -25.9% | .214 | 4.36 | .167 | 75.8% | 17.62 | 13.90 |
| 2021 | Through 2 - 0 | 2.08 | 16.62 | 0.13 | 0.00 | 4.3% | 34.8% | -30.4% | .067 | 2.08 | .071 | 100.0% | 8.25 | 11.50 |
| 2021 | Through 1 - 0 | 7.62 | 9.00 | 0.85 | 2.77 | 17.2% | 20.3% | -3.1% | .163 | 1.62 | .118 | 100.0% | 8.94 | 8.06 |
| 2021 | Through 2 - 1 | 6.35 | 12.71 | 0.50 | 4.76 | 12.9% | 25.8% | -12.9% | .136 | 1.94 | .000 | 64.1% | 13.41 | 9.95 |
| 2021 | Through 1 - 1 | 11.37 | 7.82 | 1.45 | 2.13 | 27.6% | 19.0% | 8.6% | .174 | 1.50 | .185 | 57.0% | 6.56 | 5.58 |
| 2021 | Through 0 - 1 | 12.50 | 4.50 | 2.78 | 2.00 | 30.9% | 11.1% | 19.8% | .246 | 1.44 | .325 | 51.3% | 5.28 | 4.25 |
| 2021 | Through 2 - 2 | 15.00 | 12.00 | 1.25 | 3.00 | 32.6% | 26.1% | 6.5% | .121 | 1.78 | .067 | 62.5% | 8.50 | 5.74 |
| 2021 | Through 1 - 2 | 14.59 | 5.84 | 2.50 | 0.73 | 37.7% | 15.1% | 22.6% | .182 | 1.30 | .304 | 57.7% | 3.17 | 3.26 |
| 2021 | Through 0 - 2 | 15.55 | 2.45 | 6.33 | 0.82 | 45.2% | 7.1% | 38.1% | .132 | 0.73 | .222 | 39.5% | 1.99 | 2.09 |
| Season | SP / RP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | As Reliever | 9.72 | 5.94 | 1.64 | 2.43 | 23.2% | 14.2% | 9.0% | .234 | 1.56 | .253 | 67.6% | 6.95 | 5.87 |
| Season | Shifts | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | No Shift | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .265 | 1.13 | .265 | 100.0% | 3.17 | 6.70 |
| 2021 | Shift - All | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .245 | 1.06 | .245 | 100.0% | 3.17 | 6.59 |
| 2021 | Shift - Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .222 | 0.94 | .222 | 100.0% | 3.17 | 6.48 |
| 2021 | Shift - Non Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .500 | 3.00 | .500 | 100.0% | 3.17 | 8.46 |
| Season | TTO | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2021 | 1st Through Order as RP | 9.64 | 6.06 | 1.59 | 2.48 | 22.9% | 14.4% | 8.5% | .238 | 1.59 | .256 | 67.6% | 7.09 | 5.94 |
| 2021 | 2nd Through Order as RP | 13.50 | 0.00 | 1.00 | 0.00 | 50.0% | 0.0% | 50.0% | .000 | 0.00 | .000 | 100.0% | 0.17 | 2.82 |

