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 .295Seasons 2026–2025–2024
Four-Seam Fastball 29%Sweeper 27%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 .311
  1. 1 BR Bryan Reynolds SH .329
    Pitch-by-pitch projection vs. Bryan Reynolds
    • Four-Seam Fastball (29% usage) projects to .339 xwOBA over 562 BIP — a roughly even matchup.
    • Sweeper (27% usage) projects to .322 xwOBA over 120 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .364 xwOBA over 265 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 .303 xwOBA over 290 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .251 xwOBA over 62 BIP — a clear edge for the pitcher.
    • Cutter (2% usage) projects to .391 xwOBA over 163 BIP — a meaningful edge for the batter.
  2. 2 BL Brandon Lowe SH .316
    Pitch-by-pitch projection vs. Brandon Lowe
    • Four-Seam Fastball (29% usage) projects to .342 xwOBA over 399 BIP — a meaningful edge for the batter.
    • Sweeper (27% usage) projects to .279 xwOBA over 102 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .351 xwOBA over 215 BIP — a meaningful edge for the batter.
    • Knuckle Curve (10% usage) projects to .277 xwOBA over 33 BIP — a clear edge for the pitcher.
    • Changeup (4% usage) projects to .336 xwOBA over 234 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .266 xwOBA over 87 BIP — a clear edge for the pitcher.
    • Cutter (2% usage) projects to .296 xwOBA over 123 BIP — a roughly even matchup.
  3. 3 NG Nick Gonzales RHB .308
    Pitch-by-pitch projection vs. Nick Gonzales
    • Four-Seam Fastball (29% usage) projects to .308 xwOBA over 335 BIP — a roughly even matchup.
    • Sweeper (27% usage) projects to .298 xwOBA over 131 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .320 xwOBA over 306 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 .333 xwOBA over 106 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 106 BIP — a roughly even matchup.
  4. 4 JM Jake Mangum SH .303
    Pitch-by-pitch projection vs. Jake Mangum
    • Four-Seam Fastball (29% usage) projects to .304 xwOBA over 225 BIP — a roughly even matchup.
    • Sweeper (27% usage) projects to .309 xwOBA over 53 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .295 xwOBA over 125 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 114 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .290 xwOBA over 39 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .302 xwOBA over 63 BIP — a roughly even matchup.
  5. 5 RO Ryan O'Hearn LHB .318
    Pitch-by-pitch projection vs. Ryan O'Hearn
    • Four-Seam Fastball (29% usage) projects to .327 xwOBA over 449 BIP — a roughly even matchup.
    • Sweeper (27% usage) projects to .290 xwOBA over 74 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .356 xwOBA over 239 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 .308 xwOBA over 159 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .302 xwOBA over 55 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .275 xwOBA over 108 BIP — a clear edge for the pitcher.
  6. 6 SH Spencer Horwitz LHB .299
    Pitch-by-pitch projection vs. Spencer Horwitz
    • Four-Seam Fastball (29% usage) projects to .293 xwOBA over 416 BIP — a roughly even matchup.
    • Sweeper (27% usage) projects to .299 xwOBA over 80 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .302 xwOBA over 182 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 .304 xwOBA over 131 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .309 xwOBA over 54 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .286 xwOBA over 103 BIP — a roughly even matchup.
  7. 7 OC Oneil Cruz LHB .332
    Pitch-by-pitch projection vs. Oneil Cruz
    • Four-Seam Fastball (29% usage) projects to .380 xwOBA over 379 BIP — a meaningful edge for the batter.
    • Sweeper (27% usage) projects to .309 xwOBA over 113 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .310 xwOBA over 232 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .317 xwOBA over 45 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .278 xwOBA over 194 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .302 xwOBA over 72 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .425 xwOBA over 107 BIP — a meaningful edge for the batter.
  8. 8 JT Jared Triolo RHB .291
    Pitch-by-pitch projection vs. Jared Triolo
    • Four-Seam Fastball (29% usage) projects to .292 xwOBA over 374 BIP — a roughly even matchup.
    • Sweeper (27% usage) projects to .267 xwOBA over 97 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .321 xwOBA over 257 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 .287 xwOBA over 101 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .269 xwOBA over 22 BIP — a clear edge for the pitcher.
    • Cutter (2% usage) projects to .266 xwOBA over 71 BIP — a clear edge for the pitcher.
  9. 9 KG Konnor Griffin RHB .305
    Pitch-by-pitch projection vs. Konnor Griffin
    • Four-Seam Fastball (29% usage) projects to .301 xwOBA over 67 BIP — a roughly even matchup.
    • Sweeper (27% usage) projects to .295 xwOBA over 28 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .320 xwOBA over 70 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .301 xwOBA over 4 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .308 xwOBA over 34 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .304 xwOBA over 8 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .335 xwOBA over 20 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.