PITCHER MATCHUP

George Kirby vs Pittsburgh Pirates

How the Pittsburgh Pirates'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 .317vs RHH xwOBA .296Seasons 2026–2025–2024
Four-Seam Fastball 29%Sweeper 28%Sinker 23%Knuckle Curve 10%Changeup 4%Splitter 3%Cutter 2%

How the Pittsburgh Pirates's regulars project

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

Lineup avg xwOBA .308
  1. 1 BR Bryan Reynolds SH .330
    Pitch-by-pitch projection vs. Bryan Reynolds
    • Four-Seam Fastball (29% usage) projects to .340 xwOBA over 569 BIP — a meaningful edge for the batter.
    • Sweeper (28% usage) projects to .323 xwOBA over 120 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .364 xwOBA over 267 BIP — a meaningful edge for the batter.
    • Knuckle Curve (10% usage) projects to .265 xwOBA over 44 BIP — a clear edge for the pitcher.
    • Changeup (4% usage) projects to .302 xwOBA over 294 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .250 xwOBA over 62 BIP — a clear edge for the pitcher.
    • Cutter (2% usage) projects to .391 xwOBA over 164 BIP — a meaningful edge for the batter.
  2. 2 NG Nick Gonzales RHB .307
    Pitch-by-pitch projection vs. Nick Gonzales
    • Four-Seam Fastball (29% usage) projects to .310 xwOBA over 343 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .295 xwOBA over 131 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .318 xwOBA over 311 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .307 xwOBA over 22 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .334 xwOBA over 107 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .287 xwOBA over 27 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .297 xwOBA over 107 BIP — a roughly even matchup.
  3. 3 JM Jake Mangum SH .301
    Pitch-by-pitch projection vs. Jake Mangum
    • Four-Seam Fastball (29% usage) projects to .301 xwOBA over 229 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .308 xwOBA over 53 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .293 xwOBA over 126 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .320 xwOBA over 19 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .270 xwOBA over 118 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .291 xwOBA over 39 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .299 xwOBA over 65 BIP — a roughly even matchup.
  4. 4 RO Ryan O'Hearn LHB .316
    Pitch-by-pitch projection vs. Ryan O'Hearn
    • Four-Seam Fastball (29% usage) projects to .324 xwOBA over 459 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .290 xwOBA over 75 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .353 xwOBA over 242 BIP — a meaningful edge for the batter.
    • Knuckle Curve (10% usage) projects to .300 xwOBA over 31 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .307 xwOBA over 160 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .300 xwOBA over 55 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .269 xwOBA over 113 BIP — a clear edge for the pitcher.
  5. 5 SH Spencer Horwitz LHB .301
    Pitch-by-pitch projection vs. Spencer Horwitz
    • Four-Seam Fastball (29% usage) projects to .298 xwOBA over 424 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .301 xwOBA over 81 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .302 xwOBA over 184 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .309 xwOBA over 20 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .306 xwOBA over 132 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .307 xwOBA over 54 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .284 xwOBA over 104 BIP — a roughly even matchup.
  6. 6 OC Oneil Cruz LHB .332
    Pitch-by-pitch projection vs. Oneil Cruz
    • Four-Seam Fastball (29% usage) projects to .379 xwOBA over 379 BIP — a meaningful edge for the batter.
    • Sweeper (28% usage) projects to .310 xwOBA over 113 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .310 xwOBA over 236 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .318 xwOBA over 46 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .276 xwOBA over 194 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .301 xwOBA over 72 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .423 xwOBA over 109 BIP — a meaningful edge for the batter.
  7. 7 JT Jared Triolo RHB .291
    Pitch-by-pitch projection vs. Jared Triolo
    • Four-Seam Fastball (29% usage) projects to .290 xwOBA over 375 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .267 xwOBA over 97 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .322 xwOBA over 258 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .301 xwOBA over 11 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .286 xwOBA over 103 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .270 xwOBA over 22 BIP — a clear edge for the pitcher.
    • Cutter (2% usage) projects to .265 xwOBA over 73 BIP — a clear edge for the pitcher.
  8. 8 KG Konnor Griffin RHB .312
    Pitch-by-pitch projection vs. Konnor Griffin
    • Four-Seam Fastball (29% usage) projects to .320 xwOBA over 76 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .295 xwOBA over 28 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .328 xwOBA over 76 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .299 xwOBA over 5 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .309 xwOBA over 36 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .304 xwOBA over 8 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .334 xwOBA over 24 BIP — a roughly even matchup.
  9. 9 HD Henry Davis RHB .285
    Pitch-by-pitch projection vs. Henry Davis
    • Four-Seam Fastball (29% usage) projects to .250 xwOBA over 221 BIP — a clear edge for the pitcher.
    • Sweeper (28% usage) projects to .284 xwOBA over 54 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .323 xwOBA over 135 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 .266 xwOBA over 51 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .306 xwOBA over 12 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .306 xwOBA over 40 BIP — a roughly even matchup.
Full pitch-by-pitch breakdown, with pitch-zone heatmaps →

No meeting currently scheduled — this is a durable season matchup read.