Colorado Rockies @ St. Louis Cardinals Prediction – August 9, 2026
The St. Louis Cardinals host the Colorado Rockies on August 9, 2026, in a matchup where the WP Baseball Predictor model has a clear lean. With St. Louis carrying a Confident-tier win probability against Colorado, the Cardinals moneyline represents the model's top selection for this contest— though it falls short of the threshold to be flagged as a strong favourite, meaning bettors should approach with measured confidence.
Starting Pitcher Matchup Analysis
Michael Lorenzen (Colorado Rockies)
Michael Lorenzen takes the ball for Colorado in what figures to be a challenging outing. His xFIP of 4.74 is the only advanced pitching metric needed to tell an important story — it suggests his underlying performance points to a pitcher who is susceptible to giving up runs when the defense and sequencing don't bail him out. An xFIP above 4.50 is generally a red flag at the major league level, and Lorenzen's 4.74 mark indicates a pitcher the Cardinals lineup should be able to work against.
Michael McGreevy (St. Louis Cardinals)
McGreevy holds a meaningful edge in this pitching duel, posting an xFIP of 4.14 — a full 0.60 points better than his counterpart on the mound. That gap in expected performance is one of the primary drivers behind the model's lean toward St. Louis. An xFIP in the low-to-mid 4.00 range suggests McGreevy is operating as a solid mid-rotation arm capable of keeping Colorado's offense in check for several innings.
The pitching matchup, in isolation, clearly favors the home team. When you pair McGreevy's superior xFIP with the Cardinals' team-level pitching metrics — a FIP of 4.19 and ERA of 4.14 — St. Louis projects as the more reliable unit on both an individual and collective basis.
Why the WP Model Favors the Cardinals
The WP Baseball Predictor's lean toward St. Louis is built on a convergence of factors. First, the pitching edge is quantifiable — McGreevy's xFIP of 4.14 versus Lorenzen's 4.74 represents a meaningful gap in projected effectiveness. Second, Colorado's team pitching staff carries a FIP of 4.89 and ERA of 5.48, signaling that any bullpen involvement from the Rockies carries significant risk. By contrast, St. Louis has a team FIP and ERA both sitting at 4.19 and 4.14 respectively, showing strong alignment between their run prevention and underlying metrics.
On the offensive side, the Rockies hold a slight edge in wOBA at 0.322 compared to the Cardinals' 0.304, suggesting Colorado is capable of generating offense. However, the Cardinals' pitching depth and McGreevy's stronger projected outing are enough for the model to maintain a Confident-tier win probability for St. Louis.
Injury Report Impact
The Rockies are navigating a more significant injury situation heading into this game. Colorado has five players sidelined, with a notable cluster of shoulder-related injuries:
- Tyler Bell – Shoulder (Out)
- Brody Brecht – Shoulder (7-Day IL)
- Jackson Cox – Undisclosed (7-Day IL)
- Jeff Criswell – Shoulder (15-Day IL)
- Jaden Hill – Shoulder (15-Day IL)
The Cardinals' injury list is comparatively lighter, with three players on the shelf — Skylar Hales, Travis Honeyman, and Ethan Young — all with undisclosed ailments on the 7-Day IL. The depth disparity in the bullpen, particularly for Colorado, could prove costly if Lorenzen runs into trouble early.
Dark Horse Home Run Picks
Mickey Moniak – Colorado Rockies
Moniak is the dark horse HR pick on the Colorado side. In a game where the Rockies will need power to stay competitive, Moniak offers sneaky upside against a Cardinals starter in McGreevy.
Everson Pereira – St. Louis Cardinals
Pereira is the Cardinals' dark horse selection and a name worth watching against Lorenzen's 4.74 xFIP. If St. Louis's offense gets rolling, Pereira has the tools to do damage in a favorable matchup at home.
Final Prediction
WP Pick: Cardinals Moneyline. With a Confident-tier win probability, a clear pitching edge through McGreevy, superior team-wide pitching metrics, and a thinner Colorado injury report, St. Louis is the play on August 9, 2026.