PITCHER MATCHUP

Kumar Rocker vs Seattle Mariners

How the Seattle Mariners'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 .375vs RHH xwOBA .306Seasons 2026–2025–2024
Slider 30%Sinker 29%Cutter 18%Four-Seam Fastball 15%Changeup 6%Curveball 2%

How the Seattle Mariners's regulars project

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

Lineup avg xwOBA .327
  1. 1 JN Josh Naylor LHB .317
    Pitch-by-pitch projection vs. Josh Naylor
    • Slider (30% usage) projects to .277 xwOBA over 219 BIP — a clear edge for the pitcher.
    • Sinker (29% usage) projects to .328 xwOBA over 281 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .335 xwOBA over 123 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .355 xwOBA over 477 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .321 xwOBA over 226 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .305 xwOBA over 85 BIP — a roughly even matchup.
  2. 2 CY Cole Young LHB .321
    Pitch-by-pitch projection vs. Cole Young
    • Slider (30% usage) projects to .316 xwOBA over 79 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .348 xwOBA over 111 BIP — a meaningful edge for the batter.
    • Cutter (18% usage) projects to .306 xwOBA over 47 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .302 xwOBA over 236 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .313 xwOBA over 77 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .332 xwOBA over 31 BIP — a roughly even matchup.
  3. 3 JR Julio Rodríguez RHB .341
    Pitch-by-pitch projection vs. Julio Rodríguez
    • Slider (30% usage) projects to .353 xwOBA over 283 BIP — a meaningful edge for the batter.
    • Sinker (29% usage) projects to .345 xwOBA over 375 BIP — a meaningful edge for the batter.
    • Cutter (18% usage) projects to .316 xwOBA over 116 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .357 xwOBA over 434 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .305 xwOBA over 177 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .330 xwOBA over 83 BIP — a roughly even matchup.
  4. 4 RA Randy Arozarena RHB .330
    Pitch-by-pitch projection vs. Randy Arozarena
    • Slider (30% usage) projects to .295 xwOBA over 259 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .354 xwOBA over 331 BIP — a meaningful edge for the batter.
    • Cutter (18% usage) projects to .348 xwOBA over 120 BIP — a meaningful edge for the batter.
    • Four-Seam Fastball (15% usage) projects to .356 xwOBA over 523 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .277 xwOBA over 183 BIP — a clear edge for the pitcher.
    • Curveball (2% usage) projects to .332 xwOBA over 79 BIP — a roughly even matchup.
  5. 5 JC J.P. Crawford LHB .313
    Pitch-by-pitch projection vs. J.P. Crawford
    • Slider (30% usage) projects to .289 xwOBA over 199 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .322 xwOBA over 264 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .299 xwOBA over 125 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .353 xwOBA over 504 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .335 xwOBA over 119 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .320 xwOBA over 52 BIP — a roughly even matchup.
  6. 6 CR Cal Raleigh SH .353
    Pitch-by-pitch projection vs. Cal Raleigh
    • Slider (30% usage) projects to .320 xwOBA over 176 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .419 xwOBA over 153 BIP — a meaningful edge for the batter.
    • Cutter (18% usage) projects to .331 xwOBA over 121 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .334 xwOBA over 574 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .349 xwOBA over 287 BIP — a meaningful edge for the batter.
    • Curveball (2% usage) projects to .288 xwOBA over 113 BIP — a roughly even matchup.
  7. 7 LR Luke Raley LHB .324
    Pitch-by-pitch projection vs. Luke Raley
    • Slider (30% usage) projects to .268 xwOBA over 142 BIP — a clear edge for the pitcher.
    • Sinker (29% usage) projects to .362 xwOBA over 115 BIP — a meaningful edge for the batter.
    • Cutter (18% usage) projects to .336 xwOBA over 89 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .359 xwOBA over 265 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .299 xwOBA over 136 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .331 xwOBA over 48 BIP — a roughly even matchup.
  8. 8 DC Dominic Canzone LHB .343
    Pitch-by-pitch projection vs. Dominic Canzone
    • Slider (30% usage) projects to .319 xwOBA over 95 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .329 xwOBA over 101 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .377 xwOBA over 48 BIP — a meaningful edge for the batter.
    • Four-Seam Fastball (15% usage) projects to .400 xwOBA over 205 BIP — a meaningful edge for the batter.
    • Changeup (6% usage) projects to .282 xwOBA over 118 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .365 xwOBA over 51 BIP — a meaningful edge for the batter.
  9. 9 CE Colt Emerson LHB .303
    Pitch-by-pitch projection vs. Colt Emerson
    • Slider (30% usage) projects to .311 xwOBA over 18 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .310 xwOBA over 31 BIP — a roughly even matchup.
    • Cutter (18% usage) projects to .288 xwOBA over 16 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .293 xwOBA over 50 BIP — a roughly even matchup.
    • Changeup (6% usage) projects to .295 xwOBA over 18 BIP — a roughly even matchup.
    • Curveball (2% usage) projects to .303 xwOBA over 13 BIP — a roughly even matchup.
Full pitch-by-pitch breakdown, with pitch-zone heatmaps →

Next scheduled meeting: 2026-07-27 game page →