McGreevy’s 2.10 ERA creates a clear pitching edge — but the 8-run total is still pricing yesterday’s extra-inning explosion rather than the season-long offensive struggles from both clubs.
Carmen Mlodzinski vs Michael McGreevy: Pittsburgh Pirates at St. Louis Cardinals Betting Preview
The market set this total at 8 runs, accounting for yesterday’s 15-run explosion between these same teams, but that extra-inning slugfest masks what’s been a season-long trend toward lower scoring for both clubs. Pittsburgh averages just 4.9 runs per game this season, while St. Louis sits even lower at 4.6 — and both offenses have gone ice-cold recently. McGreevy’s elite 2.10 ERA and pristine control profile creates the exact environment where struggling lineups stay buried.
The pitching gap here isn’t overwhelming — Mlodzinski’s 4.40 ERA suggests vulnerability — but it’s enough when facing offenses that have scored 3 runs or fewer in 6 of their combined last 8 games. This sets up as exactly the kind of pitcher-friendly environment that keeps totals under the number.
Game Info & Betting Lines
- Date/Time: Wednesday, May 20, 2026, 7:45 PM ET
- Venue: Busch Stadium (Park Factor 1.00 – neutral)
- Probable Starters: Carmen Mlodzinski (3-3, 4.40) vs Michael McGreevy (3-2, 2.10)
- Moneyline: Pittsburgh Pirates -102 / St. Louis Cardinals -116
- Run Line: St. Louis Cardinals +1.5 (-200) / Pittsburgh Pirates -1.5 (+164)
- Total: 8 (Over -105 / Under -115)
Why This Number Is Inflated
The market is reacting to yesterday’s 9-6 Cardinals win that went to extra innings and featured four home runs. That’s the noise — a bullpen breakdown and bonus baseball inflating what would have been a much quieter regulation game. The legitimate case for the over centers on both lineups showing some thump this season: Jordan Walker’s .945 OPS leads a Cardinals offense that can string together hits, while Brandon Lowe’s 12 home runs anchor a Pirates lineup with pop.
But here’s where the market is slightly off: it’s pricing in offensive breakout potential while ignoring the recent reality. Pittsburgh has scored exactly zero runs in each of their last two games before yesterday’s 6-run outburst — that’s an offense that’s been grinding against quality pitching. St. Louis hasn’t been much better, managing just 4.6 runs per game at home this season despite the favorable park dimensions. The 8-run total assumes both teams rediscover their offensive rhythm simultaneously.
What Separates the Pitching
McGreevy brings elite control and run prevention to this matchup — his 0.88 WHIP and 11 walks in 51.1 innings create the foundation for keeping Pittsburgh’s lineup off-balance. His changeup at 86.4 mph generates a devastating 34.4% whiff rate with a .280 xwOBA-against, giving him a true put-away pitch that Mlodzinski lacks. McGreevy’s 4-seam fastball sits at 91.3 mph with just 23.5% usage, but it’s the complementary arsenal that makes him dangerous — the curveball (.233 xwOBA-against) and changeup create the sequencing that keeps hitters guessing.
Mlodzinski operates with a different profile entirely — his split-finger at 85.5 mph (28.3% usage) generates solid whiffs at 30.1%, but his fastball arsenal gets hammered (.396 xwOBA on the four-seam, .442 on the sinker). That’s problematic against a Cardinals lineup that features Walker’s .492 xwOBA and 8.5% barrel rate. Where McGreevy attacks the zone with precision, Mlodzinski creates contact that often favors the hitter. The gap isn’t just in results (2.10 ERA vs 4.40) — it’s in the quality of contact each pitcher allows and the margin for error in their respective approaches.
The Pushback
The concern here is that yesterday’s offensive explosion represents both teams finally breaking through against pitching, not an aberration. Walker launched one of those four home runs and carries a .945 OPS that suggests legitimate run creation ability, while Pittsburgh counters with Lowe’s .892 OPS and power potential throughout the lineup. Oneil Cruz’s .506 xwOBA with 9.6% barrel rate creates the kind of ceiling outcomes that can blow up an under bet with one swing.
The flip side is McGreevy’s vulnerability to the long ball — 6 home runs allowed in 51.1 innings isn’t elite suppression, and Pittsburgh’s power hitters like Cruz and Lowe represent exactly the type of threats that can exploit mistakes. If Mlodzinski settles into his split-finger rhythm and generates weak contact, this becomes a pitching duel that favors the under. But if both starters struggle with command early, the offensive talent is present to push this total over quickly.
Run Environment & Game Shape
Busch Stadium’s neutral park factor (1.00) means this total comes down to execution rather than environmental help. The market expects a tight, pitcher-driven contest in the 7-9 run range — exactly the type of game where McGreevy’s control advantage matters most. His ability to attack the zone without walking hitters creates shorter innings and fewer baserunners, limiting the explosive innings that drive totals over.
The scoring environment suggests a game that stays in the 3-5 runs per team range, with late-inning bullpen work determining whether we approach or exceed the 8-run mark. Both teams’ season-long tendencies lean toward the lower end of that range, making this the type of contest where one big inning from either side pushes the total, but sustained offensive pressure remains unlikely.
Joe Jensen’s Pick
JENSEN’S PICK: Under 8 (-115) — 2 Units
The pick is Under 8 (-115), meaning the combined score must stay under 8. I looked at the Cardinals moneyline at -116, but McGreevy’s advantage isn’t overwhelming enough against a .500 Pirates team to justify that price when the under provides better value on his specific skillset. The recent offensive struggles from both teams, combined with McGreevy’s elite control metrics, create exactly the environment where totals stay depressed despite yesterday’s fireworks.
I’m projecting a 4-3 Cardinals win that falls comfortably under the number. The confidence level is moderate rather than max — yesterday’s offensive explosion shows both lineups have ceiling potential, and early-season variance can always derail pitching-driven edges. But McGreevy’s 2.10 ERA and .88 WHIP against offenses averaging under 5 runs per game creates the most reliable path to profit in this spot.
