Jacob Mayers
Boston Red Sox (A)P
Age: 21
Bats/Throws: R/R
6'5" / 205
DOB: 6/10/2004
(21 years, 11 months, 10 days)
P
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In-Season ProjectionsMinor LeaguesCollege
| Season | Team | Level | Age | W W - Wins | L L - Losses | SV SV - Saves | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | GB% GB% - Ground Ball Percentage (GB/BIP) | HR/FB HR/FB - Home Run to Fly Ball Ratio | divider | vFA vFA - Fourseam Fastball velocity (Pitch Info) | divider | ERA ERA - Earned Run Average ((ER*9)/IP) | xERA xERA - Expected ERA | FIP FIP - Fielder Independent Pitching on an ERA scale | xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 19 | 9 | 1 | 0 | 15 | 15 | 75.2 | 12.49 | 6.90 | 0.71 | .266 | 87.2% | 2.02 | 4.52 | |||||||||
| 2024 | NICH | NCAA | 20 | 5 | 1 | 0 | 18 | 16 | 70.2 | 13.50 | 9.68 | 1.40 | .230 | 78.4% | 4.58 | 6.51 | |||||||||
| 2025 | LSU | NCAA | 21 | 2 | 0 | 0 | 17 | 0 | 15.0 | 15.60 | 12.00 | 0.00 | .182 | 67.9% | 4.80 | 5.02 | |||||||||
| 2026 | BOS | A | 22 | 0 | 0 | 1 | 6 | 3 | 18.2 | 12.54 | 6.75 | 0.00 | .308 | 76.9% | 52.6% | 0.0% | 2.41 | 3.16 | 3.72 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.71 | 6.25 | 1.32 | .306 | 68.0% | 6.11 | 5.99 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 3.0 | 7.03 | 4.64 | 1.13 | .305 | 66.7% | 5.13 | 4.91 | 0.0 |
| Season | Team | Level | Age | W W - Wins | L L - Losses | SV SV - Saves | G G - Games Pitched | GS GS - Games Started | IP IP - Innings Pitched | divider | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | GB% GB% - Ground Ball Percentage (GB/BIP) | HR/FB HR/FB - Home Run to Fly Ball Ratio | divider | vFA vFA - Fourseam Fastball velocity (Pitch Info) | divider | ERA ERA - Earned Run Average ((ER*9)/IP) | xERA xERA - Expected ERA | FIP FIP - Fielder Independent Pitching on an ERA scale | xFIP xFIP - Expected Fielder Independent Pitching where Home Runs are calculated as 10.5% of Fly Balls induced | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 19 | 9 | 1 | 0 | 15 | 15 | 75.2 | 12.49 | 6.90 | 0.71 | .266 | 87.2% | 2.02 | 4.52 | |||||||||
| 2024 | NICH | NCAA | 20 | 5 | 1 | 0 | 18 | 16 | 70.2 | 13.50 | 9.68 | 1.40 | .230 | 78.4% | 4.58 | 6.51 | |||||||||
| 2025 | LSU | NCAA | 21 | 2 | 0 | 0 | 17 | 0 | 15.0 | 15.60 | 12.00 | 0.00 | .182 | 67.9% | 4.80 | 5.02 | |||||||||
| 2026 | BOS | A | 22 | 0 | 0 | 1 | 6 | 3 | 18.2 | 12.54 | 6.75 | 0.00 | .308 | 76.9% | 52.6% | 0.0% | 2.41 | 3.16 | 3.72 | ||||||
| 2026 | Steamer | ROS | 22 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5.71 | 6.25 | 1.32 | .306 | 68.0% | 6.11 | 5.99 | 0.0 | ||||||||
| 2026 | OOPSY | ROS | 22 | 0 | 0 | 0 | 1 | 1 | 3.0 | 7.03 | 4.64 | 1.13 | .305 | 66.7% | 5.13 | 4.91 | 0.0 |
In-Season ProjectionsMinor LeaguesCollege
| Season | Team | Level | W W - Wins | L L - Losses | ERA ERA - Earned Run Average ((ER*9)/IP) | G G - Games Pitched | GS GS - Games Started | QS QS - Quality Starts; pitched at least 6 innings and gave up 3 or fewer earned runs | CG CG - Complete Games | ShO ShO - Shoutouts | SV SV - Saves | HLD HLD - Holds | BS BS - Blown Saves | IP IP - Innings Pitched | TBF TBF - Total Batters Faced | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | IBB IBB - Intentional | HBP HBP - Hit Batters | WP WP - Wild Pitches | BK BK - Balks | SO SO - Strikeouts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 9 | 1 | 2.02 | 15 | 15 | 0 | 0 | 0 | 75.2 | 317 | 44 | 21 | 17 | 6 | 58 | 5 | 3 | 0 | 105 | ||||
| 2024 | NICH | NCAA | 5 | 1 | 4.58 | 18 | 16 | 0 | 0 | 0 | 70.2 | 320 | 39 | 38 | 36 | 11 | 76 | 5 | 7 | 0 | 106 | ||||
| 2025 | LSU | NCAA | 2 | 0 | 4.80 | 17 | 0 | 0 | 0 | 0 | 15.0 | 72 | 4 | 9 | 8 | 0 | 20 | 4 | 2 | 0 | 26 | ||||
| 2026 | BOS | A | 0 | 0 | 2.41 | 6 | 3 | 0 | 0 | 1 | 1 | 0 | 18.2 | 79 | 12 | 6 | 5 | 0 | 14 | 0 | 0 | 3 | 0 | 26 | |
| 2026 | Steamer | ROS | 0 | 0 | 6.11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2026 | OOPSY | ROS | 0 | 0 | 5.13 | 1 | 1 | 0 | 0 | 0 | 3.0 | 13 | 3 | 2 | 2 | 0 | 2 | 0 | 0 | 2 |
| Season | Team | Level | W W - Wins | L L - Losses | ERA ERA - Earned Run Average ((ER*9)/IP) | G G - Games Pitched | GS GS - Games Started | QS QS - Quality Starts; pitched at least 6 innings and gave up 3 or fewer earned runs | CG CG - Complete Games | ShO ShO - Shoutouts | SV SV - Saves | HLD HLD - Holds | BS BS - Blown Saves | IP IP - Innings Pitched | TBF TBF - Total Batters Faced | H H - Hits Allowed | R R - Runs Allowed | ER ER - Earned Runs | HR HR - Home Runs | BB BB - Walks | IBB IBB - Intentional | HBP HBP - Hit Batters | WP WP - Wild Pitches | BK BK - Balks | SO SO - Strikeouts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 9 | 1 | 2.02 | 15 | 15 | 0 | 0 | 0 | 75.2 | 317 | 44 | 21 | 17 | 6 | 58 | 5 | 3 | 0 | 105 | ||||
| 2024 | NICH | NCAA | 5 | 1 | 4.58 | 18 | 16 | 0 | 0 | 0 | 70.2 | 320 | 39 | 38 | 36 | 11 | 76 | 5 | 7 | 0 | 106 | ||||
| 2025 | LSU | NCAA | 2 | 0 | 4.80 | 17 | 0 | 0 | 0 | 0 | 15.0 | 72 | 4 | 9 | 8 | 0 | 20 | 4 | 2 | 0 | 26 | ||||
| 2026 | BOS | A | 0 | 0 | 2.41 | 6 | 3 | 0 | 0 | 1 | 1 | 0 | 18.2 | 79 | 12 | 6 | 5 | 0 | 14 | 0 | 0 | 3 | 0 | 26 | |
| 2026 | Steamer | ROS | 0 | 0 | 6.11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | ||||
| 2026 | OOPSY | ROS | 0 | 0 | 5.13 | 1 | 1 | 0 | 0 | 0 | 3.0 | 13 | 3 | 2 | 2 | 0 | 2 | 0 | 0 | 2 |
In-Season ProjectionsMinor LeaguesAveragesCollege
| Season | Team | Level | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | K/BB K/BB - Strikeout to Walk Ratio (SO/BB) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | divider | K% K% - Strikeout Percentage (SO/TBF) | BB% BB% - Walk Percentage (BB/TBF) | K-BB% K-BB% - The difference between strikeout percentage and walk percentage | divider | AVG AVG - Batting Average Against | WHIP WHIP - Walks + Hits divided by Innings Pitched | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | divider | ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better | FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better | divider | FIP FIP - Fielder Independent Pitching on an ERA scale |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 12.49 | 6.90 | 1.81 | 0.71 | 33.1% | 18.3% | 14.8% | .173 | 1.35 | .266 | 87.2% | 4.52 | ||||||
| 2024 | NICH | NCAA | 13.50 | 9.68 | 1.39 | 1.40 | 33.1% | 23.8% | 9.4% | .163 | 1.63 | .230 | 78.4% | 6.51 | ||||||
| 2025 | LSU | NCAA | 15.60 | 12.00 | 1.30 | 0.00 | 36.1% | 27.8% | 8.3% | .083 | 1.60 | .182 | 67.9% | 5.02 | ||||||
| 2026 | BOS | A | 12.54 | 6.75 | 1.86 | 0.00 | 32.9% | 17.7% | 15.2% | .185 | 1.39 | .308 | 76.9% | 50 | 69 | 3.16 | ||||
| 2026 | Steamer | ROS | 5.71 | 6.25 | 0.91 | 1.32 | 13.4% | 14.6% | -1.3% | .283 | 1.83 | .306 | 68.0% | 5.99 | ||||||
| 2026 | OOPSY | ROS | 7.03 | 4.64 | 1.52 | 1.13 | 18.0% | 11.9% | 6.1% | .265 | 1.52 | .305 | 66.7% | 4.91 |
| Season | Team | Level | K/9 K/9 - Strikeouts per 9 Innings ((SO*9)/IP) | BB/9 BB/9 - Walks per 9 Innings ((BB*9)/IP) | K/BB K/BB - Strikeout to Walk Ratio (SO/BB) | HR/9 HR/9 - Home Runs per 9 Innings ((HR*9)/IP) | divider | K% K% - Strikeout Percentage (SO/TBF) | BB% BB% - Walk Percentage (BB/TBF) | K-BB% K-BB% - The difference between strikeout percentage and walk percentage | divider | AVG AVG - Batting Average Against | WHIP WHIP - Walks + Hits divided by Innings Pitched | BABIP BABIP - Batting Average on Balls in Play | LOB% LOB% - Left on Base Percentage | divider | ERA- ERA- - ERA adjusted for park and league where 100 is average and lower is better | FIP- FIP- - FIP adjusted for park and league where 100 is average and lower is better | divider | FIP FIP - Fielder Independent Pitching on an ERA scale |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | NICH | NCAA | 12.49 | 6.90 | 1.81 | 0.71 | 33.1% | 18.3% | 14.8% | .173 | 1.35 | .266 | 87.2% | 4.52 | ||||||
| 2024 | NICH | NCAA | 13.50 | 9.68 | 1.39 | 1.40 | 33.1% | 23.8% | 9.4% | .163 | 1.63 | .230 | 78.4% | 6.51 | ||||||
| 2025 | LSU | NCAA | 15.60 | 12.00 | 1.30 | 0.00 | 36.1% | 27.8% | 8.3% | .083 | 1.60 | .182 | 67.9% | 5.02 | ||||||
| 2026 | BOS | A | 12.54 | 6.75 | 1.86 | 0.00 | 32.9% | 17.7% | 15.2% | .185 | 1.39 | .308 | 76.9% | 50 | 69 | 3.16 | ||||
| 2026 | Steamer | ROS | 5.71 | 6.25 | 0.91 | 1.32 | 13.4% | 14.6% | -1.3% | .283 | 1.83 | .306 | 68.0% | 5.99 | ||||||
| 2026 | OOPSY | ROS | 7.03 | 4.64 | 1.52 | 1.13 | 18.0% | 11.9% | 6.1% | .265 | 1.52 | .305 | 66.7% | 4.91 |
