Guillermo Williamson
San Francisco Giants (A+)1B/OF
Age: 21
Bats/Throws: L/L
6'1" / 200
DOB: 3/16/2004
(21 years, 1 month, 15 days)
1B/OF
Quick Links
More
Stats
Stat Groups:
Select
You can shift + click on full MLB seasons in Season Stats and games in Game Logs to select spans for aggregate stats. Read more here
Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | Age | G G - Games Played | PA PA - Plate Appearances | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | SB SB - Stolen Bases | divider | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | ISO ISO - Isolated Power (SLG-AVG) | BABIP BABIP - Batting Average on Balls in Play | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | wOBA wOBA - Weighted On Base Average (Linear Weights) | xwOBA xwOBA - Expected weighted on-base average | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA | divider | BsR Base Running - Base running runs above average, includes SB or CS | divider | Off Offense - Batting and Base Running combined (above average) | Def Defense - Fielding and Positional Adjustment combined (above average) | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 18 | 58 | 224 | 7 | 27 | 38 | 2 | 13.4% | 28.6% | .191 | .308 | .234 | .344 | .426 | .370 | 104 | |||||||||
| 2023 | SFG | CPX | 19 | 56 | 229 | 9 | 37 | 51 | 1 | 16.6% | 29.3% | .226 | .396 | .285 | .415 | .511 | .430 | 129 | |||||||||
| 2024 | SFG | A | 20 | 79 | 325 | 12 | 32 | 50 | 1 | 11.4% | 30.8% | .170 | .322 | .238 | .335 | .408 | .352 | 99 | |||||||||
| 2025 | Steamer | PROJ | 21 | 0 | 1 | 0 | 0 | 0 | 0 | 6.2% | 35.1% | .098 | .247 | .172 | .230 | .270 | .224 | 42 | 0.0 | -0.1 | 0.0 | 0.0 | |||||
| 2025 | OOPSY | PROJ | 21 | 0 | 1 | 0 | 0 | 0 | 0 | 7.0% | 37.0% | .123 | .278 | .188 | .249 | .311 | .248 | 59 | 0.0 | -0.1 | 0.0 | 0.0 | |||||
| 2025 | SFG | A+ | 21 | 11 | 41 | 1 | 5 | 5 | 0 | 19.5% | 29.3% | .156 | .300 | .219 | .366 | .375 | .358 | 108 | |||||||||
| 2025 | Steamer | ROS | 0 | 1 | 0 | 0 | 0 | 0 | 7.0% | 34.6% | .101 | .259 | .179 | .243 | .280 | .238 | 49 | 0.0 | -0.1 | 0.0 | 0.0 |
| Season | Team | Level | Age | G G - Games Played | PA PA - Plate Appearances | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | SB SB - Stolen Bases | divider | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | ISO ISO - Isolated Power (SLG-AVG) | BABIP BABIP - Batting Average on Balls in Play | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | wOBA wOBA - Weighted On Base Average (Linear Weights) | xwOBA xwOBA - Expected weighted on-base average | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA | divider | BsR Base Running - Base running runs above average, includes SB or CS | divider | Off Offense - Batting and Base Running combined (above average) | Def Defense - Fielding and Positional Adjustment combined (above average) | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 18 | 58 | 224 | 7 | 27 | 38 | 2 | 13.4% | 28.6% | .191 | .308 | .234 | .344 | .426 | .370 | 104 | |||||||||
| 2023 | SFG | CPX | 19 | 56 | 229 | 9 | 37 | 51 | 1 | 16.6% | 29.3% | .226 | .396 | .285 | .415 | .511 | .430 | 129 | |||||||||
| 2024 | SFG | A | 20 | 79 | 325 | 12 | 32 | 50 | 1 | 11.4% | 30.8% | .170 | .322 | .238 | .335 | .408 | .352 | 99 | |||||||||
| 2025 | Steamer | PROJ | 21 | 0 | 1 | 0 | 0 | 0 | 0 | 6.2% | 35.1% | .098 | .247 | .172 | .230 | .270 | .224 | 42 | 0.0 | -0.1 | 0.0 | 0.0 | |||||
| 2025 | OOPSY | PROJ | 21 | 0 | 1 | 0 | 0 | 0 | 0 | 7.0% | 37.0% | .123 | .278 | .188 | .249 | .311 | .248 | 59 | 0.0 | -0.1 | 0.0 | 0.0 | |||||
| 2025 | SFG | A+ | 21 | 11 | 41 | 1 | 5 | 5 | 0 | 19.5% | 29.3% | .156 | .300 | .219 | .366 | .375 | .358 | 108 | |||||||||
| 2025 | Steamer | ROS | 0 | 1 | 0 | 0 | 0 | 0 | 7.0% | 34.6% | .101 | .259 | .179 | .243 | .280 | .238 | 49 | 0.0 | -0.1 | 0.0 | 0.0 |
Preseason ProjectionsIn-Season ProjectionsMinor Leagues
| Season | Team | Level | G G - Games Played | AB AB - At Bats | PA PA - Plate Appearances | H H - Hits | 1B 1B - Singles | 2B 2B - Doubles | 3B 3B - Triples | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | BB BB - Walks | IBB IBB - Intentional Walks | SO SO - Strike Outs | HBP HBP - Hit by Pitch | SF SF - Sacrifice Fly | SH SH - Sacrifice Hit | GDP GDP - Ground into Double Play | SB SB - Stolen Bases | CS CS - Caught Stealing | AVG AVG - Batting Average (H/AB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 58 | 188 | 224 | 44 | 22 | 15 | 0 | 7 | 27 | 38 | 30 | 0 | 64 | 3 | 3 | 0 | 1 | 2 | 1 | .234 |
| 2023 | SFG | CPX | 56 | 186 | 229 | 53 | 29 | 15 | 0 | 9 | 37 | 51 | 38 | 0 | 67 | 4 | 1 | 0 | 4 | 1 | 0 | .285 |
| 2024 | SFG | A | 79 | 282 | 325 | 67 | 43 | 12 | 0 | 12 | 32 | 50 | 37 | 0 | 100 | 5 | 1 | 0 | 13 | 1 | 1 | .238 |
| 2025 | Steamer | PROJ | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .172 | |
| 2025 | OOPSY | PROJ | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .188 | |
| 2025 | SFG | A+ | 11 | 32 | 41 | 7 | 4 | 2 | 0 | 1 | 5 | 5 | 8 | 0 | 12 | 0 | 1 | 0 | 2 | 0 | 0 | .219 |
| 2025 | Steamer | ROS | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .179 |
| Season | Team | Level | G G - Games Played | AB AB - At Bats | PA PA - Plate Appearances | H H - Hits | 1B 1B - Singles | 2B 2B - Doubles | 3B 3B - Triples | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | BB BB - Walks | IBB IBB - Intentional Walks | SO SO - Strike Outs | HBP HBP - Hit by Pitch | SF SF - Sacrifice Fly | SH SH - Sacrifice Hit | GDP GDP - Ground into Double Play | SB SB - Stolen Bases | CS CS - Caught Stealing | AVG AVG - Batting Average (H/AB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 58 | 188 | 224 | 44 | 22 | 15 | 0 | 7 | 27 | 38 | 30 | 0 | 64 | 3 | 3 | 0 | 1 | 2 | 1 | .234 |
| 2023 | SFG | CPX | 56 | 186 | 229 | 53 | 29 | 15 | 0 | 9 | 37 | 51 | 38 | 0 | 67 | 4 | 1 | 0 | 4 | 1 | 0 | .285 |
| 2024 | SFG | A | 79 | 282 | 325 | 67 | 43 | 12 | 0 | 12 | 32 | 50 | 37 | 0 | 100 | 5 | 1 | 0 | 13 | 1 | 1 | .238 |
| 2025 | Steamer | PROJ | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .172 | |
| 2025 | OOPSY | PROJ | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .188 | |
| 2025 | SFG | A+ | 11 | 32 | 41 | 7 | 4 | 2 | 0 | 1 | 5 | 5 | 8 | 0 | 12 | 0 | 1 | 0 | 2 | 0 | 0 | .219 |
| 2025 | Steamer | ROS | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .179 |
Preseason ProjectionsIn-Season ProjectionsMinor LeaguesAverages
| Season | Team | Level | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | BB/K BB/K - Walk to Strikeout Ratio (BB/SO) | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | OPS OPS - On Base + Slugging Percentage | divider | ISO ISO - Isolated Power (SLG-AVG) | Spd Spd - Speed Score (4 Component Version) | BABIP BABIP - Batting Average on Balls in Play | divider | UBR UBR - Ultimate Base Running in runs above average, does not include SB or CS | wGDP wGDP - Ground into Double Play Runs above average | XBR XBR - Statcast baserunning above average | wSB wSB - Stolen Bases and Caught Stealing runs above average | divider | wRC wRC - Runs Created based wOBA | wRAA wRAA - Runs Above Average based on wOBA | wOBA wOBA - Weighted On Base Average (Linear Weights) | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 13.4% | 28.6% | 0.47 | .234 | .344 | .426 | .769 | .191 | 2.9 | .308 | 0.0 | 35 | 2.5 | .370 | 104 | |||||||
| 2023 | SFG | CPX | 16.6% | 29.3% | 0.57 | .285 | .415 | .511 | .926 | .226 | 2.9 | .396 | -0.3 | 49 | 11.6 | .430 | 129 | |||||||
| 2024 | SFG | A | 11.4% | 30.8% | 0.37 | .238 | .335 | .408 | .743 | .170 | 1.6 | .322 | -0.9 | 45 | -0.1 | .352 | 99 | |||||||
| 2025 | Steamer | PROJ | 6.2% | 35.1% | 0.18 | .172 | .230 | .270 | .500 | .098 | 3.4 | .247 | 0.0 | 0.0 | 0 | -0.1 | .224 | 42 | ||||||
| 2025 | OOPSY | PROJ | 7.0% | 37.0% | 0.19 | .188 | .249 | .311 | .560 | .123 | 1.3 | .278 | 0.0 | 0 | -0.1 | .248 | 59 | |||||||
| 2025 | SFG | A+ | 19.5% | 29.3% | 0.67 | .219 | .366 | .375 | .741 | .156 | 1.3 | .300 | -0.1 | 6 | 0.4 | .358 | 108 | |||||||
| 2025 | Steamer | ROS | 7.0% | 34.6% | 0.20 | .179 | .243 | .280 | .524 | .101 | 3.3 | .259 | 0.0 | 0.0 | 0 | -0.1 | .238 | 49 |
| Season | Team | Level | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | BB/K BB/K - Walk to Strikeout Ratio (BB/SO) | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | OPS OPS - On Base + Slugging Percentage | divider | ISO ISO - Isolated Power (SLG-AVG) | Spd Spd - Speed Score (4 Component Version) | BABIP BABIP - Batting Average on Balls in Play | divider | UBR UBR - Ultimate Base Running in runs above average, does not include SB or CS | wGDP wGDP - Ground into Double Play Runs above average | XBR XBR - Statcast baserunning above average | wSB wSB - Stolen Bases and Caught Stealing runs above average | divider | wRC wRC - Runs Created based wOBA | wRAA wRAA - Runs Above Average based on wOBA | wOBA wOBA - Weighted On Base Average (Linear Weights) | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | SFG | DSL | 13.4% | 28.6% | 0.47 | .234 | .344 | .426 | .769 | .191 | 2.9 | .308 | 0.0 | 35 | 2.5 | .370 | 104 | |||||||
| 2023 | SFG | CPX | 16.6% | 29.3% | 0.57 | .285 | .415 | .511 | .926 | .226 | 2.9 | .396 | -0.3 | 49 | 11.6 | .430 | 129 | |||||||
| 2024 | SFG | A | 11.4% | 30.8% | 0.37 | .238 | .335 | .408 | .743 | .170 | 1.6 | .322 | -0.9 | 45 | -0.1 | .352 | 99 | |||||||
| 2025 | Steamer | PROJ | 6.2% | 35.1% | 0.18 | .172 | .230 | .270 | .500 | .098 | 3.4 | .247 | 0.0 | 0.0 | 0 | -0.1 | .224 | 42 | ||||||
| 2025 | OOPSY | PROJ | 7.0% | 37.0% | 0.19 | .188 | .249 | .311 | .560 | .123 | 1.3 | .278 | 0.0 | 0 | -0.1 | .248 | 59 | |||||||
| 2025 | SFG | A+ | 19.5% | 29.3% | 0.67 | .219 | .366 | .375 | .741 | .156 | 1.3 | .300 | -0.1 | 6 | 0.4 | .358 | 108 | |||||||
| 2025 | Steamer | ROS | 7.0% | 34.6% | 0.20 | .179 | .243 | .280 | .524 | .101 | 3.3 | .259 | 0.0 | 0.0 | 0 | -0.1 | .238 | 49 |
