Rhett Lowder is on the 15-Day IL with a shoulder injury, meaning St. Louis likely faces a replacement arm rather than a functional rotation starter — yet the Cardinals are priced at just -134, a number that appears set for a genuine starter-vs-starter matchup. McGreevy’s 2.98 ERA and 1.10 WHIP represent a real edge, but the price sits just north of where the margin justifies full commitment.
Rhett Lowder vs. Michael McGreevy: Cincinnati Reds at St. Louis Cardinals Betting Preview
The Cardinals have won three straight, including a 10-3 dismantling and a 6-5 comeback in this very series — capped by Lars Nootbaar’s go-ahead two-run homer in the eighth inning on Saturday — and they send Michael McGreevy — one of the more quietly underrated starters in the NL Central — to the mound in the rubber game. Cincinnati, meanwhile, is listed with Rhett Lowder as the probable starter, but Lowder is currently on the 15-Day IL with a shoulder injury. That detail alone reframes the entire game: St. Louis may not be facing a functional major-league rotation starter at all.
The market has the Cardinals at -134 on the moneyline, which implies roughly a 57% win probability. The numbers peg them closer to 70%. That’s a meaningful gap — but -134 clears my personal juice ceiling of -130 by just enough to keep this out of standalone-play territory. The side is right. The price isn’t quite there.
After yesterday’s Cardinals win, today’s matchup presents a different puzzle: the edge is real, but the number doesn’t offer enough margin to commit units on it cleanly.
Game Info & Betting Lines
- Date/Time: Sunday, June 7, 2026 | 2:15 PM ET
- Venue: Busch Stadium — Park Factor 1.00 (neutral run environment)
- Probable Starters: Rhett Lowder (CIN) vs. Michael McGreevy (STL) — Note: Lowder is on the 15-Day IL (shoulder); Cincinnati may deploy a replacement arm
- Moneyline: Cincinnati Reds +114 / St. Louis Cardinals -134
- Run Line: St. Louis Cardinals -1.5 (+150) / Cincinnati Reds +1.5 (-184)
- Total: 9 (Over -122 / Under +100)
Why This Number Is Close
The market at Cardinals -134 is doing something reasonable: it’s pricing in a home favorite with modest pitching edge, a three-game winning streak, and a visiting team that sits 31-32 in the win-loss column — the Reds’ actual record — with a -49 run differential. That’s a fair baseline for a game between two middle-of-the-road NL Central clubs.
The legitimate case for Cincinnati at +114 rests on variance and the Cardinals’ own inconsistency. St. Louis has a -4 run differential despite their 34-28 record — they’ve been winning close, not blowing teams out. Their bullpen nearly gave back a two-run lead in yesterday’s ninth before Riley O’Brien escaped a bases-loaded jam. That’s not the profile of a team you hammer at -134 with confidence.
But here’s the problem: the market doesn’t appear to have fully processed that Lowder almost certainly isn’t pitching. A functional Lowder at a 5.40 ERA is already a significant downgrade from McGreevy. A replacement-level arm out of Cincinnati’s depleted rotation — already missing Hunter Greene (elbow), Brandon Williamson (shoulder), and Graham Ashcraft (elbow) — is a different proposition entirely. The line looks like it was set assuming a real starter-vs-starter matchup. That assumption may be wrong.
What Separates the Pitching
Michael McGreevy has been the Cardinals’ most consistent starter in 2026, posting a 2.98 ERA and 1.10 WHIP across 66.1 innings — nearly double Lowder’s 38.1 IP workload. That workload differential matters: McGreevy has proven he can sustain command across a full start. His arsenal is genuinely diverse: a changeup generating 33.6% whiff rate and a .288 xwOBA against it, a sweeper at 29.3% whiff rate, and a curveball sitting at 28.9% whiff. His four-seam fastball runs 91.4 mph and holds a .393 xwOBA — not dominant, but serviceable when paired with the offspeed mix. The concern is his sweeper (.538 xwOBA against) and slider (.541 xwOBA against) — two pitches that can get hit hard when he misses location. McGreevy creates low-run innings against average contact lineups, but this Reds offense has real threats: JJ Bleday is posting a .452 xwOBA and a .482 mark against right-handed pitching specifically.
Lowder, assuming he even takes the ball, has been troubling: a 5.40 ERA, 1.41 WHIP, and a sinker that opponents are hitting to an xwOBA of .405. His slider (31.9% whiff, .276 xwOBA against) is genuinely good, and his changeup (26.9% whiff, .292 xwOBA) gives him a second weapon. But 18 walks in 38.1 innings is a free-base rate that kills your starter. The Cardinals’ lineup is built for this: Jordan Walker (.477 xwOBA, .529 vs. left-handed pitching) and Nelson Velázquez (.506 xwOBA, 8.3% barrel rate, 36.7% hard-hit) sit at the 3-4 spots against a pitcher who struggles to miss bats with his primary pitch. If Cincinnati goes to a bullpen arm instead, the gap only widens further.
McGreevy’s innings project cleaner — lower walk totals (17 BB in 66 IP), better WHIP, and a sustained track record. The gap between these two arms on paper is significant. The gap in reality may be even larger.
The Pushback
Here’s where I have to pump the brakes. The Cardinals’ 34-28 record looks solid, but their -4 run differential tells a more complicated story — they’ve been surviving close games, not dominating them. McGreevy’s sweeper and slider are genuine liabilities: that .538 and .541 xwOBA against those two pitches means any stretch of poor location turns into a multi-run inning fast. The Reds’ top of the order — Bleday (.452 xwOBA), Steer (.434), and Stewart (.418) — can inflict real damage against a pitcher who’s leaning on a vulnerable breaking ball mix.
The bullpen concern is real, too. Yesterday’s ninth-inning scare, with O’Brien escaping a bases-loaded jam, is a reminder that St. Louis doesn’t have a lockdown back end. If McGreevy labors early or exits before the sixth, Cincinnati’s bats can make this interesting in a hurry. And the Nootbaar factor cuts both ways — he was sensational on Friday and Saturday in his season debut, but he’s still working himself back from bilateral heel surgery. Expect regression to find him at some point.
The one pushback I keep coming back to: yesterday’s go-ahead swing was Nootbaar’s go-ahead two-run homer in the eighth inning off a Reds reliever. That’s a late-inning leverage play, not a systematic edge. The Cardinals are winning these close games, but they’re doing it in ways that aren’t fully repeatable.
Rejected Angles
The run line at Cardinals -1.5 (+150) is tempting on paper, but the projected margin here is razor thin — a single run separates these teams in the numbers. Taking -1.5 at plus money sounds attractive until you remember how many of St. Louis’s wins this week have come by one run or in extra innings. I’m not laying -1.5 in a game I expect to be close.
The total at 9 is equally uninteresting. With a neutral park factor of 1.00 and a replacement arm potentially taking the mound for Cincinnati, the over/under hinges entirely on how long that arm lasts. The projected total of 9.4 gives a tiny lean to the over, but “tiny lean” on a total that swings this much on a personnel question isn’t a bet I want to make. Pass on both.
Run Environment & Game Shape
Busch Stadium’s 1.00 park factor means no artificial inflation or suppression — what you see is what you get. The projected score of Cardinals 5, Reds 4.5 implies a tight, low-margin game where a single swing decides the outcome. Yesterday’s game literally played out that way: Nootbaar’s go-ahead two-run homer in the eighth inning was the difference in a 6-5 final.
The game shape here is a Cardinals team with a real starting pitching edge trying to protect a lead against a Reds offense that can string together hits but hasn’t been able to sustain big innings — Cincinnati’s -49 run differential is the worst evidence of that. If McGreevy gets through five or six innings in decent shape, St. Louis’s bullpen, warts and all, has shown enough this series to close it out.
Cardinals ML is the right side here — I like it as a parlay leg or a beer-money play, but not at -134 as a standalone. Zero units on its own; the price is just outside where I can justify committing real money on a moneyline this short in a one-run projected game.
The Lean
Bet: Cardinals Moneyline (parlay leg or beer-money only — zero standalone units)
The Cardinals are the right side. McGreevy vs. a replacement arm or a compromised Lowder is a matchup that favors St. Louis clearly. The home team, the better pitcher, the better run differential on paper, and a lineup that’s built to exploit Cincinnati’s command issues. I like all of it. I just don’t like it enough to pay -134 to get there. If you’re building a parlay and need a confident leg, the Cardinals belong in it. As a standalone bet, the juice is one tick too high to pull the trigger.
