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 .370vs RHH xwOBA .306Seasons 2026–2025–2024
Slider 32%Sinker 29%Cutter 17%Four-Seam Fastball 15%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 .325
  1. 1 JR Julio Rodríguez RHB .337
    Pitch-by-pitch projection vs. Julio Rodríguez
    • Slider (32% usage) projects to .337 xwOBA over 305 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .345 xwOBA over 406 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .308 xwOBA over 134 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .360 xwOBA over 475 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .324 xwOBA over 188 BIP — a roughly even matchup.
  2. 2 JN Josh Naylor LHB .313
    Pitch-by-pitch projection vs. Josh Naylor
    • Slider (32% usage) projects to .265 xwOBA over 237 BIP — a clear edge for the pitcher.
    • Sinker (29% usage) projects to .329 xwOBA over 306 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .331 xwOBA over 135 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .359 xwOBA over 518 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .320 xwOBA over 242 BIP — a roughly even matchup.
  3. 3 CY Cole Young LHB .311
    Pitch-by-pitch projection vs. Cole Young
    • Slider (32% usage) projects to .302 xwOBA over 94 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .331 xwOBA over 141 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .296 xwOBA over 68 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .309 xwOBA over 261 BIP — a roughly even matchup.
    • Changeup (5% usage) projects to .304 xwOBA over 97 BIP — a roughly even matchup.
  4. 4 RA Randy Arozarena RHB .335
    Pitch-by-pitch projection vs. Randy Arozarena
    • Slider (32% usage) projects to .299 xwOBA over 280 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .367 xwOBA over 364 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .339 xwOBA over 131 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .354 xwOBA over 565 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .298 xwOBA over 201 BIP — a roughly even matchup.
  5. 5 TW Taylor Ward RHB .327
    Pitch-by-pitch projection vs. Taylor Ward
    • Slider (32% usage) projects to .290 xwOBA over 302 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .363 xwOBA over 389 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .309 xwOBA over 150 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .375 xwOBA over 552 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .273 xwOBA over 146 BIP — a clear edge for the pitcher.
  6. 6 DC Dominic Canzone LHB .336
    Pitch-by-pitch projection vs. Dominic Canzone
    • Slider (32% usage) projects to .305 xwOBA over 120 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .329 xwOBA over 128 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .361 xwOBA over 63 BIP — a meaningful edge for the batter.
    • Four-Seam Fastball (15% usage) projects to .395 xwOBA over 243 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .300 xwOBA over 137 BIP — a roughly even matchup.
  7. 7 CR Cal Raleigh SH .348
    Pitch-by-pitch projection vs. Cal Raleigh
    • Slider (32% usage) projects to .300 xwOBA over 192 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .411 xwOBA over 167 BIP — a meaningful edge for the batter.
    • Cutter (17% usage) projects to .326 xwOBA over 132 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .349 xwOBA over 620 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .344 xwOBA over 302 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 .291 xwOBA over 202 BIP — a roughly even matchup.
    • Sinker (29% usage) projects to .321 xwOBA over 276 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .297 xwOBA over 126 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .358 xwOBA over 516 BIP — a meaningful edge for the batter.
    • Changeup (5% usage) projects to .330 xwOBA over 124 BIP — a roughly even matchup.
  9. 9 WW Weston Wilson RHB .305
    Pitch-by-pitch projection vs. Weston Wilson
    • Slider (32% usage) projects to .277 xwOBA over 49 BIP — a clear edge for the pitcher.
    • Sinker (29% usage) projects to .324 xwOBA over 55 BIP — a roughly even matchup.
    • Cutter (17% usage) projects to .329 xwOBA over 32 BIP — a roughly even matchup.
    • Four-Seam Fastball (15% usage) projects to .312 xwOBA over 110 BIP — a roughly even matchup.
    • Changeup (5% usage) projects to .267 xwOBA over 48 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.