PITCHER MATCHUP

Kumar Rocker vs Houston Astros

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

Kumar Rocker's arsenal

Throws RHPvs LHH xwOBA .372vs RHH xwOBA .304Seasons 2026–2025–2024
Slider 30%Sinker 28%Cutter 18%Four-Seam Fastball 15%Changeup 6%Curveball 2%

How the Houston Astros's regulars project

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

Lineup avg xwOBA .319
  1. 1 CW Christian Walker RHB .317
    Pitch-by-pitch projection vs. Christian Walker
    • Slider (30% usage) projects to .285 xwOBA over 246 BIP — a roughly even matchup.
    • Sinker (28% usage) projects to .346 xwOBA over 322 BIP — a meaningful edge for the batter.
    • Cutter (18% usage) projects to .323 xwOBA over 112 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .324 xwOBA over 436 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .311 xwOBA over 158 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .277 xwOBA over 104 BIP — a clear edge for the pitcher.
  2. 2 YA Yordan Alvarez SH .396
    Pitch-by-pitch projection vs. Yordan Alvarez
    • Slider (30% usage) projects to .374 xwOBA over 163 BIP — a meaningful edge for the batter.
    • Sinker (28% usage) projects to .429 xwOBA over 195 BIP — a meaningful edge for the batter.
    • Cutter (18% usage) projects to .373 xwOBA over 106 BIP — a meaningful edge for the batter.
    • Four-Seam Fastball (15% usage) projects to .398 xwOBA over 371 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .391 xwOBA over 124 BIP — a meaningful edge for the batter.
    • Curveball (2% usage) projects to .435 xwOBA over 85 BIP — a meaningful edge for the batter.
  3. 3 IP Isaac Paredes RHB .312
    Pitch-by-pitch projection vs. Isaac Paredes
    • Slider (30% usage) projects to .281 xwOBA over 199 BIP — a roughly even matchup.
    • Sinker (28% usage) projects to .329 xwOBA over 303 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .334 xwOBA over 105 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .335 xwOBA over 429 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .266 xwOBA over 142 BIP — a clear edge for the pitcher.
    • Curveball (2% usage) projects to .281 xwOBA over 84 BIP — a roughly even matchup.
  4. 4 CS Cam Smith RHB .323
    Pitch-by-pitch projection vs. Cam Smith
    • Slider (30% usage) projects to .295 xwOBA over 131 BIP — a roughly even matchup.
    • Sinker (28% usage) projects to .319 xwOBA over 212 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .345 xwOBA over 57 BIP — a meaningful edge for the batter.
    • Four-Seam Fastball (15% usage) projects to .351 xwOBA over 207 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .339 xwOBA over 78 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .336 xwOBA over 40 BIP — a roughly even matchup.
  5. 5 JA Jose Altuve RHB .303
    Pitch-by-pitch projection vs. Jose Altuve
    • Slider (30% usage) projects to .269 xwOBA over 304 BIP — a clear edge for the pitcher.
    • Sinker (28% usage) projects to .319 xwOBA over 307 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .325 xwOBA over 132 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .325 xwOBA over 420 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .272 xwOBA over 159 BIP — a clear edge for the pitcher.
    • Curveball (2% usage) projects to .301 xwOBA over 77 BIP — a roughly even matchup.
  6. 6 BM Brice Matthews RHB .304
    Pitch-by-pitch projection vs. Brice Matthews
    • Slider (30% usage) projects to .286 xwOBA over 34 BIP — a roughly even matchup.
    • Sinker (28% usage) projects to .321 xwOBA over 47 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .324 xwOBA over 20 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .301 xwOBA over 86 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .260 xwOBA over 30 BIP — a clear edge for the pitcher.
    • Curveball (2% usage) projects to .295 xwOBA over 13 BIP — a roughly even matchup.
  7. 7 CV Christian Vázquez RHB .285
    Pitch-by-pitch projection vs. Christian Vázquez
    • Slider (30% usage) projects to .273 xwOBA over 105 BIP — a clear edge for the pitcher.
    • Sinker (28% usage) projects to .303 xwOBA over 117 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .296 xwOBA over 60 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .269 xwOBA over 259 BIP — a clear edge for the pitcher.
    • Changeup (6% usage) projects to .261 xwOBA over 51 BIP — a clear edge for the pitcher.
    • Curveball (2% usage) projects to .293 xwOBA over 38 BIP — a roughly even matchup.
  8. 8 YD Yainer Diaz RHB .324
    Pitch-by-pitch projection vs. Yainer Diaz
    • Slider (30% usage) projects to .307 xwOBA over 261 BIP — a roughly even matchup.
    • Sinker (28% usage) projects to .338 xwOBA over 238 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .333 xwOBA over 102 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .334 xwOBA over 285 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .305 xwOBA over 149 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .286 xwOBA over 95 BIP — a roughly even matchup.
  9. 9 TT Taylor Trammell LHB .307
    Pitch-by-pitch projection vs. Taylor Trammell
    • Slider (30% usage) projects to .296 xwOBA over 30 BIP — a roughly even matchup.
    • Sinker (28% usage) projects to .315 xwOBA over 24 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .325 xwOBA over 17 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .298 xwOBA over 120 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .301 xwOBA over 29 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .295 xwOBA over 13 BIP — a roughly even matchup.
Full pitch-by-pitch breakdown, with pitch-zone heatmaps →

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