PITCHER MATCHUP

George Kirby vs Houston Astros

How the Houston Astros'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 Houston Astros's regulars project

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

Lineup avg xwOBA .310
  1. 1 CW Christian Walker RHB .299
    Pitch-by-pitch projection vs. Christian Walker
    • Four-Seam Fastball (29% usage) projects to .280 xwOBA over 514 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .280 xwOBA over 143 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .344 xwOBA over 374 BIP — a meaningful edge for the batter.
    • Knuckle Curve (10% usage) projects to .302 xwOBA over 27 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .313 xwOBA over 173 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .291 xwOBA over 39 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .295 xwOBA over 126 BIP — a roughly even matchup.
  2. 2 YA Yordan Alvarez SH .369
    Pitch-by-pitch projection vs. Yordan Alvarez
    • Four-Seam Fastball (29% usage) projects to .391 xwOBA over 434 BIP — a meaningful edge for the batter.
    • Sweeper (28% usage) projects to .325 xwOBA over 93 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .400 xwOBA over 235 BIP — a meaningful edge for the batter.
    • Knuckle Curve (10% usage) projects to .370 xwOBA over 19 BIP — a meaningful edge for the batter.
    • Changeup (4% usage) projects to .371 xwOBA over 161 BIP — a meaningful edge for the batter.
    • Splitter (3% usage) projects to .308 xwOBA over 75 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .364 xwOBA over 125 BIP — a meaningful edge for the batter.
  3. 3 IP Isaac Paredes RHB .304
    Pitch-by-pitch projection vs. Isaac Paredes
    • Four-Seam Fastball (29% usage) projects to .317 xwOBA over 501 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .268 xwOBA over 130 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .328 xwOBA over 363 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .311 xwOBA over 21 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .281 xwOBA over 166 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .294 xwOBA over 54 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .343 xwOBA over 124 BIP — a meaningful edge for the batter.
  4. 4 JA Jose Altuve RHB .299
    Pitch-by-pitch projection vs. Jose Altuve
    • Four-Seam Fastball (29% usage) projects to .326 xwOBA over 487 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .264 xwOBA over 181 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .313 xwOBA over 358 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .292 xwOBA over 27 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .274 xwOBA over 173 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .296 xwOBA over 51 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .311 xwOBA over 149 BIP — a roughly even matchup.
  5. 5 CS Cam Smith RHB .298
    Pitch-by-pitch projection vs. Cam Smith
    • Four-Seam Fastball (29% usage) projects to .319 xwOBA over 256 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .257 xwOBA over 91 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .318 xwOBA over 260 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .306 xwOBA over 14 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .294 xwOBA over 101 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .290 xwOBA over 35 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .314 xwOBA over 69 BIP — a roughly even matchup.
  6. 6 JP Jeremy Peña RHB .333
    Pitch-by-pitch projection vs. Jeremy Peña
    • Four-Seam Fastball (29% usage) projects to .393 xwOBA over 378 BIP — a meaningful edge for the batter.
    • Sweeper (28% usage) projects to .292 xwOBA over 153 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .326 xwOBA over 344 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .303 xwOBA over 14 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .289 xwOBA over 147 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .305 xwOBA over 45 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .392 xwOBA over 139 BIP — a meaningful edge for the batter.
  7. 7 YD Yainer Diaz RHB .312
    Pitch-by-pitch projection vs. Yainer Diaz
    • Four-Seam Fastball (29% usage) projects to .324 xwOBA over 322 BIP — a roughly even matchup.
    • Sweeper (28% usage) projects to .285 xwOBA over 170 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .342 xwOBA over 273 BIP — a meaningful edge for the batter.
    • Knuckle Curve (10% usage) projects to .276 xwOBA over 18 BIP — a clear edge for the pitcher.
    • Changeup (4% usage) projects to .296 xwOBA over 178 BIP — a roughly even matchup.
    • Splitter (3% usage) projects to .342 xwOBA over 47 BIP — a meaningful edge for the batter.
    • Cutter (2% usage) projects to .338 xwOBA over 117 BIP — a roughly even matchup.
  8. 8 TT Taylor Trammell LHB .281
    Pitch-by-pitch projection vs. Taylor Trammell
    • Four-Seam Fastball (29% usage) projects to .275 xwOBA over 162 BIP — a clear edge for the pitcher.
    • Sweeper (28% usage) projects to .268 xwOBA over 23 BIP — a clear edge for the pitcher.
    • Sinker (23% usage) projects to .293 xwOBA over 41 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .297 xwOBA over 6 BIP — a roughly even matchup.
    • Changeup (4% usage) projects to .269 xwOBA over 58 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .276 xwOBA over 15 BIP — a clear edge for the pitcher.
    • Cutter (2% usage) projects to .346 xwOBA over 27 BIP — a meaningful edge for the batter.
  9. 9 BM Brice Matthews RHB .292
    Pitch-by-pitch projection vs. Brice Matthews
    • Four-Seam Fastball (29% usage) projects to .277 xwOBA over 89 BIP — a clear edge for the pitcher.
    • Sweeper (28% usage) projects to .314 xwOBA over 23 BIP — a roughly even matchup.
    • Sinker (23% usage) projects to .300 xwOBA over 52 BIP — a roughly even matchup.
    • Knuckle Curve (10% usage) projects to .269 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 .255 xwOBA over 31 BIP — a clear edge for the pitcher.
    • Splitter (3% usage) projects to .290 xwOBA over 10 BIP — a roughly even matchup.
    • Cutter (2% usage) projects to .304 xwOBA over 21 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.