
Lucas Giolito
Boston Red Sox · SP
Throws:
R
Bats:
R
Height:
6'6
Weight:
245
Born:
Jul 14, 1994 ()
Percentile Ranks
vs LHH
vs RHH K%
60.6
22.1 xWOBA
0.360 · 26%
0.344 · 26%
xSLG
22.2
33.1
vs LHH
vs RHH K%
60.6
22.1 xWOBA
0.360 · 26%
0.344 · 26%
xSLG
22.2
33.1
| Year | Team | G | GS | W-L | IP | ERA | WHIP | K% | CSW% | BB% | xAVG | xSLG | xwOBA | xISO | BAR% | SS% | HH% | GB% | LD% | FB% | Z% |
Z Sw% |
OZ% |
OZ Sw% |
Apr | May | Jun | Jul | Aug | Sep |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 26 | 26 | 10-4 | 145.0 | 3.41 | 1.29 | 19.7% | 0.0% | 9.1% | .274 | .477 | .353 | .203 | 9.0% | 38.3% | 41% | 40% | 24% | 27% | 51% | 16% | 49% | 41% | 17.3 | 10.2 | 17.0 | 17.6 | 19.7 | 10.1 | |
| 2023 | 33 | 33 | 8-15 | 184.1 | 4.88 | 1.31 | 25.7% | 0.0% | 9.2% | .239 | .445 | .329 | .205 | 11.0% | 33.3% | 42% | 36% | 23% | 29% | 49% | 19% | 51% | 53% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| 2022 | 30 | 30 | 11-9 | 161.2 | 4.90 | 1.44 | 25.4% | 0.0% | 8.7% | .249 | .397 | .318 | .149 | 7.5% | 37.9% | 39% | 39% | 27% | 29% | 48% | 17% | 52% | 52% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| 2021 | White Sox | 31 | 31 | 11-9 | 178.2 | 3.53 | 1.09 | 28.0% | 0.0% | 7.0% | .221 | .362 | .280 | .141 | 6.7% | 37.4% | 34% | 34% | 28% | 27% | 51% | 24% | 49% | 53% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2020 | White Sox | 12 | 12 | 4-3 | 72.1 | 3.48 | 1.04 | 33.7% | 0.0% | 9.7% | .196 | .323 | .270 | .126 | 5.6% | 33.5% | 35% | 44% | 22% | 27% | 50% | 28% | 50% | 58% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2019 | White Sox | 29 | 29 | 14-9 | 176.2 | 3.41 | 1.06 | 32.4% | 0.0% | 8.0% | .215 | .368 | .283 | .154 | 9.4% | 37.3% | 35% | 36% | 28% | 24% | 54% | 26% | 46% | 50% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2018 | White Sox | 32 | 32 | 10-13 | 173.1 | 6.13 | 1.48 | 16.1% | 0.0% | 11.6% | .256 | .433 | .348 | .177 | 7.0% | 30.5% | 37% | 45% | 22% | 25% | 49% | 15% | 51% | 38% | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2025 Splits | vs LHB | vs RHB | Pitch | Type | MPH | SPIN | Whiff% | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4-Seamer | Fastball | MPH | 0% | 56% | .287 | .377 | 18.6 | 12.1 | .505 | .142 | 2 | 45% | .328 | .401 | 12.9 | 7.9 | .559 | .112 | 4 | |
| Slider | Breaking | 86.0 MPH | 1966 | 32% | 16% | .293 | .397 | 32.5 | 7.5 | .596 | .216 | 2 | 37% | .247 | .287 | 23.5 | 4.9 | .374 | .063 | 2 |
| Changeup | Offspeed | 81.7 MPH | 1673 | 27% | 29% | .233 | .322 | 21.2 | 5.9 | .472 | .205 | 4 | 18% | .224 | .313 | 22.2 | 8.9 | .430 | .268 | 3 |
| 2024 Splits | vs LHB | vs RHB | Pitch | Type | MPH | SPIN | Whiff% | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|
| 2023 Splits | vs LHB | vs RHB | Pitch | Type | MPH | SPIN | Whiff% | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR | Usage | xBAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4-Seamer | Fastball | 93.1 MPH | 2173 | 20% | 45% | .201 | .306 | 28.6 | 12.1 | .397 | .200 | 7 | 40% | .310 | .417 | 22.2 | 9.2 | .596 | .346 | 12 |
| Sinker | Fastball | MPH | 0% | 0% | .000 | .000 | 0.0 | 0.0 | .000 | .000 | 0 | |||||||||
| Curveball | Breaking | 77.9 MPH | 2334 | 20% | 3% | .333 | .294 | 33.3 | 0.0 | .333 | .500 | 0 | 0% | .000 | .590 | 0.0 | 0.0 | .511 | .480 | 0 |
| Slider | Breaking | 84.0 MPH | 1978 | 35% | 17% | .228 | .363 | 27.5 | 11.8 | .530 | .372 | 3 | 36% | .235 | .275 | 25.1 | 4.2 | .365 | .156 | 6 |
| Changeup | Offspeed | 80.9 MPH | 1547 | 35% | 35% | .212 | .306 | 24.2 | 10.9 | .402 | .239 | 7 | 23% | .213 | .303 | 29.8 | 7.0 | .404 | .225 | 6 |
| Splits | vs LHB | vs RHB | Year | PA | xBAVG | xWOBA | xSLG | ISO | K% | BB% | HR | PA | xBAVG | xWOBA | xSLG | ISO | K% | BB% | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 297 | .272 | .360 | .502 | .166 | 22.2% | 9.1% | 8 | 314 | .276 | .344 | .454 | .110 | 17.5% | 8.6% | 9 |
| 2023 | 322 | .210 | .314 | .419 | .240 | 26.7% | 11.5% | 17 | 467 | .259 | .338 | .463 | .245 | 25.1% | 6.9% | 24 |
| 2022 | 294 | .212 | .287 | .343 | .118 | 29.6% | 9.2% | 7 | 403 | .275 | .341 | .437 | .230 | 22.3% | 8.2% | 17 |
| 2021 | 345 | .214 | .271 | .333 | .141 | 28.1% | 8.1% | 9 | 373 | .227 | .288 | .388 | .206 | 27.9% | 5.9% | 18 |
| Home | Road | Season | PA | xAVG | xWOBA | K% | BB% | xSLG | ISO | HR | PA | xAVG | xWOBA | K% | BB% | xSLG | ISO | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 46 | .270 | .322 | 53.0% | 23.0% | .413 | .316 | 1 | 55 | .214 | .282 | 68.0% | 31.0% | .346 | .239 | 0 |
| 2023 | 354 | .228 | .301 | 27.4% | 7.9% | .389 | .191 | 15 | 435 | .250 | .351 | 24.4% | 9.4% | .492 | .286 | 26 |
| 2022 | 335 | .251 | .319 | 25.1% | 6.9% | .410 | .199 | 14 | 362 | .246 | .318 | 25.7% | 10.2% | .385 | .168 | 10 |
| 2021 | 353 | .209 | .274 | 27.8% | 7.4% | .357 | .219 | 18 | 365 | .232 | .285 | 28.2% | 6.6% | .367 | .133 | 9 |
| Split | Games | Wind 0-9 mph+ | Wind 10+ mph | Humid 0-25 | Humid 25-50 | Humid 50-75 | Humid 75-100 | Temp 0-40 | Temp 40-60 | Temp 61-79 | Temp 80+ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Road | 19.81 | 19.92 | 19.51 | 0.00 | 23.87 | 13.33 | 12.90 | 0.00 | 17.30 | 19.64 | 23.00 |
| Home | 12.83 | 13.48 | 8.07 | 15.85 | 15.42 | 5.19 | 20.59 | 0.00 | 16.13 | 13.67 | 1.80 |
