MLB Game Preview: Colorado Rockies (20-31) vs. Arizona Diamondbacks (25-24)

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Arizona Diamondbacks logo

First Pitch: 5:10 PM MST / 4:10 PM PDT

Broadcast: Bally Sports Arizona, AT&T SportsNet Rocky Mountain, MLB.TV

A matchup of contrasting trajectories: the Rockies trying to stabilize after a rough May, and the Diamondbacks pushing to climb above .500 behind their ace Zac Gallen. With Michael Lorenzen on the mound for Colorado, Arizona enters as a clear favorite — but Chase Field’s offensive environment always leaves room for volatility.

Venue & Weather

Chase Field features a retractable roof, and with Phoenix heat, it is almost always closed for night games.

Phoenix Weather Forecast:

  • Temperature: 96–100°F
  • Wind: 6–9 mph out to right field
  • Humidity: 10–15%
  • Roof: Almost certainly closed
  • Impact:
    • Roof closed → neutral-to-slightly hitter-friendly
    • Ball carries well in dry air
    • Line-drive hitters benefit most

Injury Report

Colorado Rockies

  • Kris Bryant — OUT (back)
  • Ezequiel Tovar — Day-to-day (ankle)
  • Nolan Jones — Active
  • Kyle Freeland — OUT (shoulder)
  • Daniel Bard — OUT (forearm)

Arizona Diamondbacks

  • Corbin Carroll — Day-to-day (wrist)
  • Ketel Marte — Active
  • Jordan Lawlar — OUT (thumb)
  • Eduardo Rodríguez — OUT (lat)
  • Paul Sewald — Active

Team Records & Recent Form

Colorado Rockies (20–31)

  • Last 10: 4–6
  • Trend: Offense inconsistent, pitching struggling
  • Strength: Middle-of-order power (Jones, Doyle)
  • Weakness: Rotation depth, bullpen ERA bottom 5 in MLB

Arizona Diamondbacks (25–24)

  • Last 10: 6–4
  • Trend: Pitching stabilizing, offense improving
  • Strength: Balanced lineup, strong top-of-order
  • Weakness: Bullpen inconsistency

Probable Pitching Matchup

Colorado — RHP Michael Lorenzen (2–5, 4.89 ERA)

  • Profile:
    • Four-seam/cutter/split mix
    • Can be effective when inducing weak contact
    • Prone to walks and elevated pitch counts
  • Splits:
    • Vs RHB: .271 AVG
    • Vs LHB: .289 AVG
    • Road ERA: 5.12
  • Matchup Notes:
    • Arizona’s lefties (Pederson, McCarthy) are dangerous
    • Lorenzen must avoid middle-middle cutters

Arizona — RHP Zac Gallen (4–3, 3.32 ERA)

  • Profile:
    • One of MLB’s most complete pitchers
    • Four-seam/change/curve/cutter mix
    • Elite command, high strikeout potential
  • Splits:
    • Vs RHB: .214 AVG
    • Vs LHB: .238 AVG
    • Home ERA: 2.98
  • Matchup Notes:
    • Rockies’ lineup struggles vs elite right-handed pitching
    • Gallen should work deep into the game

Key Player Matchups

1. Ketel Marte (ARI) vs. Michael Lorenzen

  • Marte is scorching hot in May
  • Lorenzen struggles vs switch-hitters Advantage: Arizona

2. Nolan Jones (COL) vs. Zac Gallen

  • Jones has power but high strikeout risk
  • Gallen’s curveball is a major problem for him Advantage: Arizona

3. Christian Walker (ARI) vs. Lorenzen

  • Walker crushes cutters and splitters
  • Perfect matchup for extra-base potential Advantage: Arizona

4. Brenton Doyle (COL) vs. Gallen

  • Doyle’s speed is a weapon, but OBP is low
  • Gallen rarely gives free passes Advantage: Arizona

Series History

  • 2025 Season: Diamondbacks won 10–3
  • 2026 Season: Diamondbacks lead 1–0 (Friday’s game)
  • At Chase Field (last 15): Arizona leads 11–4
  • Trend: Arizona has dominated this matchup for two years

Betting Trends

Colorado Rockies

  • Rockies are 3–9 in last 12 road games
  • Under is 6–3 in last 9 Rockies games
  • Lorenzen starts: Rockies are 2–6

Arizona Diamondbacks

  • Diamondbacks are 7–2 in last 9 home games
  • Over is 5–2 in last 7 at Chase Field
  • Gallen starts: Arizona is 6–3

Game Odds

Colorado Rockies                             8.5

Arizona Diamondbacks                 – 175

Odds Courtesy of Sports Odds Direct as of Friday, May 22, 2026