Prediction Markets Favor Yankees Big Over Cardinals as Cam Schlittler Takes the Mound

Prediction markets aren’t just tracking who wins tonight at Yankee Stadium — they’re basically calling it a landslide. Polymarket has the Yankees at 66.5% to beat the Cardinals in the series opener of a two-game set on Tuesday night, and once you look at who’s on the mound, it’s not hard to see why.

With MLB the only sport generating real action on prediction markets right now (NBA, NFL, and NHL are all still in their offseason lulls), this Cardinals-Yankees clash is drawing outsized attention. The market has pulled in nearly $70,000 in 24-hour volume on a game that, on paper, features one of the widest gaps between two probable starters you’ll find all season.

What the Betting Markets Are Saying

Polymarket’s split — 66.5% Yankees, 33.5% Cardinals — isn’t just a reflection of the standings. New York sits at 62-49 overall, comfortably above .500 and playing some of their best baseball of the year despite a beat-up roster. St. Louis, meanwhile, is 54-57, sitting 8.5 games back in the NL Central and limping into the Bronx on a 2-5 skid over their last seven games. Live MLB odds across the major books largely mirror that same lean toward the Yankees, for good reason.

The Pitching Matchup Tells the Real Story

The number driving this line more than anything else is the gap between Tuesday’s starting pitchers. Yankees right-hander Cam Schlittler has been one of the best arms in baseball this season — a 10-6 record with a 2.04 ERA, 165 strikeouts, and a stingy 0.91 WHIP across 136.2 innings. Cardinals starter Michael McGreevy, by contrast, is 4-9 with a 3.57 ERA and a 1.20 WHIP. Schlittler’s strikeout prop sits at an over/under of 6.5 (-130/+115), and given his season-long strikeout rate, that number looks very hittable for the over.

Zoom out to the team level and the disparity holds. New York’s pitching staff owns MLB’s best team ERA at 3.30, with a 1.18 WHIP (5th) and a .225 batting average against (3rd). St. Louis ranks 16th in ERA (4.17), 22nd in WHIP (1.35), and 26th in opponents’ batting average (.254). Whichever way you slice it, the Yankees are getting far more from their pitching staff on a nightly basis, and Schlittler is the poster child for that gap.

Injuries Haven’t Slowed New York Down

What makes the Yankees’ form even more notable is who’s missing. Aaron Judge has been out since early June with a rib stress fracture, and Giancarlo Stanton is dealing with a calf strain that’s expected to keep him out until at least August 11. Add in rotation injuries to Carlos Rodon and Max Fried, plus Clarke Schmidt still working back from Tommy John surgery, and this is a Yankees team piecing things together on the fly — yet still owns the best team ERA in baseball and sits 13 games over .500.

Ben Rice has stepped up in the middle of the order, hitting .303 and leading the team in run production, while Paul Goldschmidt, Anthony Volpe, and Jasson Dominguez round out a lineup that’s found ways to produce without its two biggest bats. On the other side, Jordan Walker (.290, 15 home runs) remains the name to watch for St. Louis, but he needs a lot of help to offset the pitching mismatch.

History Favors the Home Team

The head-to-head numbers add another layer here. The Yankees hold a 29-23 all-time series edge over the Cardinals (14-10 in regular-season play), and New York swept the season series 3-0 the last time these two teams met in 2025. Those meetings tended to be offense-friendly — 8-4, 12-8, and 4-3 scorelines — which is worth keeping in mind given Schlittler’s strikeout upside could keep Tuesday’s total lower than that recent trend suggests.

What It All Points To

Between the team splits, the pitching gap, and a Yankees club that’s winning games even with Judge and Stanton sidelined, the 66.5% market read on New York looks like a fair reflection of where these two teams stand right now. St. Louis has shown flashes with Walker in the middle of the order, but facing one of the best ERAs in the sport on the road while riding a recent skid is a tough combination to overcome. If prediction markets are any indication, the smart money in the Bronx is squarely on the Yankees Tuesday night.