PITCHER MATCHUP

George Kirby vs Athletics

How the Athletics's current regulars (top 9 by at-bats) project against George Kirby's season-to-date arsenal — not the posted lineup for any single game.

George Kirby's arsenal

Throws RHPvs LHH xwOBA .310vs RHH xwOBA .292Seasons 2026–2025–2024
Four-Seam Fastball 30%Sweeper 28%Sinker 23%Knuckle Curve 10%Changeup 4%Splitter 3%Cutter 2%

How the Athletics's regulars project

Projected expected wOBA for each of the Athletics's top-9-by-AB hitters against George Kirby, by batting order. A season-to-date read — lower favors the pitcher.

Lineup avg xwOBA .297
  1. 1 JM Jeff McNeil LHB .303
    Pitch-by-pitch projection vs. Jeff McNeil
    • Four-Seam Fastball (30% usage) projects to .297 xwOBA over 469 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .296 xwOBA over 67 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .313 xwOBA over 256 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .319 xwOBA over 12 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .301 xwOBA over 124 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .289 xwOBA over 55 BIP — a roughly even matchup.
  2. 2 LB Lawrence Butler LHB .288
    Pitch-by-pitch projection vs. Lawrence Butler
    • Four-Seam Fastball (30% usage) projects to .280 xwOBA over 499 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .284 xwOBA over 73 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .306 xwOBA over 225 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .278 xwOBA over 31 BIP — a clear edge for the pitcher.
    • Changeup (4% usage) projects to .283 xwOBA over 234 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .297 xwOBA over 70 BIP — a roughly even matchup.
  3. 3 HB Henry Bolte RHB .301
    Pitch-by-pitch projection vs. Henry Bolte
    • Four-Seam Fastball (30% usage) projects to .320 xwOBA over 81 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .295 xwOBA over 31 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .283 xwOBA over 100 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .303 xwOBA over 4 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .309 xwOBA over 28 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .297 xwOBA over 11 BIP — a roughly even matchup.
  4. 4 ZG Zack Gelof RHB .292
    Pitch-by-pitch projection vs. Zack Gelof
    • Four-Seam Fastball (30% usage) projects to .290 xwOBA over 287 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .289 xwOBA over 96 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .304 xwOBA over 193 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .290 xwOBA over 25 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .271 xwOBA over 94 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .282 xwOBA over 30 BIP — a roughly even matchup.
  5. 5 JH Jonah Heim SH .295
    Pitch-by-pitch projection vs. Jonah Heim
    • Four-Seam Fastball (30% usage) projects to .275 xwOBA over 475 BIP — a clear edge for the pitcher.
    • Sweeper (28% usage) projects to .274 xwOBA over 61 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .342 xwOBA over 140 BIP — a meaningful edge for the batter.
    • Knuckle Curve (10% usage) projects to .310 xwOBA over 15 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .261 xwOBA over 199 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .322 xwOBA over 62 BIP — a roughly even matchup.
  6. 6 CC Carlos Cortes LHB .306
    Pitch-by-pitch projection vs. Carlos Cortes
    • Four-Seam Fastball (30% usage) projects to .323 xwOBA over 108 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .308 xwOBA over 22 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .288 xwOBA over 71 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .297 xwOBA over 13 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .290 xwOBA over 59 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .299 xwOBA over 25 BIP — a roughly even matchup.
  7. 7 MM Max Muncy RHB .286
    Pitch-by-pitch projection vs. Max Muncy
    • Four-Seam Fastball (30% usage) projects to .308 xwOBA over 129 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .247 xwOBA over 43 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .295 xwOBA over 95 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .298 xwOBA over 6 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .299 xwOBA over 54 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .294 xwOBA over 9 BIP — a roughly even matchup.
  8. 8 DW Donovan Walton LHB .314
    Pitch-by-pitch projection vs. Donovan Walton
    • Four-Seam Fastball (30% usage) projects to .322 xwOBA over 58 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .299 xwOBA over 10 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .326 xwOBA over 43 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .314 xwOBA over 5 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .297 xwOBA over 23 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .295 xwOBA over 13 BIP — a roughly even matchup.
  9. 9 AW Alika Williams RHB .284
    Pitch-by-pitch projection vs. Alika Williams
    • Four-Seam Fastball (30% usage) projects to .297 xwOBA over 71 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .277 xwOBA over 24 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .298 xwOBA over 60 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .224 xwOBA over limited BIP — a clear edge for the pitcher (zone profile imputed from overall vs-handedness wOBA — limited per-pitch-type data).
    • Changeup (4% usage) projects to .290 xwOBA over 28 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .320 xwOBA over 6 BIP — a roughly even matchup.
Full pitch-by-pitch breakdown, with pitch-zone heatmaps →

Next scheduled meeting: 2026-09-05 game page →