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 .365vs RHH xwOBA .307Seasons 2026–2025–2024
Slider 32%Sinker 29%Cutter 17%Four-Seam Fastball 16%Changeup 5%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 .323
  1. 1 JN Josh Naylor LHB .309
    Pitch-by-pitch projection vs. Josh Naylor
    • Slider (32% usage) projects to .265 xwOBA over 248 BIP — a clear edge for the pitcher.
    • Sinker (29% usage) projects to .320 xwOBA over 321 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .327 xwOBA over 140 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .355 xwOBA over 546 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .320 xwOBA over 248 BIP — a roughly even matchup.
  2. 2 JR Julio Rodríguez RHB .335
    Pitch-by-pitch projection vs. Julio Rodríguez
    • Slider (32% usage) projects to .334 xwOBA over 316 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .346 xwOBA over 423 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .308 xwOBA over 141 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .352 xwOBA over 497 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .319 xwOBA over 195 BIP — a roughly even matchup.
  3. 3 CY Cole Young LHB .308
    Pitch-by-pitch projection vs. Cole Young
    • Slider (32% usage) projects to .297 xwOBA over 109 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .326 xwOBA over 146 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .294 xwOBA over 79 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .315 xwOBA over 282 BIP — a roughly even matchup.
    • Changeup (5% usage) projects to .302 xwOBA over 103 BIP — a roughly even matchup.
  4. 4 RA Randy Arozarena RHB .336
    Pitch-by-pitch projection vs. Randy Arozarena
    • Slider (32% usage) projects to .302 xwOBA over 298 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .367 xwOBA over 372 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .337 xwOBA over 135 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .358 xwOBA over 588 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .297 xwOBA over 212 BIP — a roughly even matchup.
  5. 5 TW Taylor Ward RHB .328
    Pitch-by-pitch projection vs. Taylor Ward
    • Slider (32% usage) projects to .288 xwOBA over 304 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .362 xwOBA over 391 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .311 xwOBA over 151 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .377 xwOBA over 559 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .278 xwOBA over 150 BIP — a clear edge for the pitcher.
  6. 6 DC Dominic Canzone LHB .333
    Pitch-by-pitch projection vs. Dominic Canzone
    • Slider (32% usage) projects to .301 xwOBA over 144 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .328 xwOBA over 138 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .350 xwOBA over 71 BIP — a meaningful edge for the batter.
    • Four-Seam Fastball (16% usage) projects to .399 xwOBA over 264 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .299 xwOBA over 142 BIP — a roughly even matchup.
  7. 7 CR Cal Raleigh SH .346
    Pitch-by-pitch projection vs. Cal Raleigh
    • Slider (32% usage) projects to .296 xwOBA over 204 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .417 xwOBA over 175 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .313 xwOBA over 143 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .348 xwOBA over 642 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .347 xwOBA over 314 BIP — a meaningful edge for the batter.
  8. 8 JC J.P. Crawford LHB .313
    Pitch-by-pitch projection vs. J.P. Crawford
    • Slider (32% usage) projects to .295 xwOBA over 213 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .319 xwOBA over 288 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .286 xwOBA over 136 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .360 xwOBA over 545 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .329 xwOBA over 125 BIP — a roughly even matchup.
  9. 9 WW Weston Wilson RHB .301
    Pitch-by-pitch projection vs. Weston Wilson
    • Slider (32% usage) projects to .279 xwOBA over 54 BIP — a clear edge for the pitcher.
    • Sinker (29% usage) projects to .314 xwOBA over 58 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .327 xwOBA over 34 BIP — a roughly even matchup.
    • Four-Seam Fastball (16% usage) projects to .308 xwOBA over 129 BIP — a roughly even matchup.
    • Changeup (5% usage) projects to .258 xwOBA over 55 BIP — a clear edge for the pitcher.
Full pitch-by-pitch breakdown, with pitch-zone heatmaps →

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