Pittsburgh Pirates vs St. Louis Cardinals Picks, Prediction, Odds, and Line Movement for Wednesday May 20 2026
Use Code WWWC The Pittsburgh Pirates and St. Louis Cardinals continue their series Wednesday night at Busch Stadium, and after the Cardinals took a wild extra-inning 9-6 win on Tuesday, the pitching matchup gives the home side a clean edge in Game 2. Michael McGreevy has been one of the most efficient arms in baseball this year, the Cardinals are surging in the NL Central race, and Carmen Mlodzinski’s WHIP profile is exactly the kind of vulnerability a confident home lineup can exploit. For more daily slate breakdowns and sharper angles, our MLB picks hub is a great companion to the read below.
Quick Picks and Prediction
- Moneyline Pick: Cardinals -118
- Total Pick: Under 8
- Projected Final Score: Cardinals 4, Pirates 3
Odds and Line Movement
The Cardinals opened this line as a modest favorite at -126 and the price has compressed slightly to -118 across the cycle, while Pittsburgh has moved from +104 to -102. Public ticket and dollar splits have ping-ponged, with one window showing 100% on the Pirates before flipping to a near 50/50 split in the most recent reading. The total is the clearer story, with the number drifting between 7½ and 8 across an exhaustive line history and Under juice climbing to -119 at one of the most recent timestamps before stabilizing.
Opening Odds
| Team | Moneyline | Total |
|---|---|---|
| Pittsburgh | +104 | Over 7½ (-116) |
| St. Louis | -126 | Under 7½ (-104) |
Current Odds
| Team | Moneyline | Total |
|---|---|---|
| Pittsburgh | -102 | Over 8 (-101) |
| St. Louis | -118 | Under 8 (-119) |
Line Movement - Moneyline
| Date | Time | Pittsburgh | St. Louis | Public ($, #) |
|---|---|---|---|---|
| 05/20 | 08:58:22AM | -102 | -118 | STL 53%, PIT 53% |
| 05/20 | 12:06:43AM | -101 | -120 | PIT 100%, PIT 100% |
| 05/19 | 08:56:00PM | +101 | -122 | — |
| 05/19 | 07:50:48PM | +100 | -120 | — |
| 05/19 | 05:04:38PM | +104 | -126 | — |
Line Movement - Total
| Date | Time | Over | Under | Public ($, #) |
|---|---|---|---|---|
| 05/20 | 08:41:24AM | 8 (-101) | 8 (-119) | OV 93%, OV 85% |
| 05/20 | 08:20:22AM | 8 (-104) | 8 (-115) | OV 93%, OV 85% |
| 05/20 | 08:11:08AM | 8 (-102) | 8 (-118) | OV 93%, OV 85% |
| 05/20 | 07:49:11AM | 7½ (-119) | 7½ (-102) | OV 93%, OV 85% |
| 05/20 | 06:36:38AM | 7½ (-115) | 7½ (-104) | OV 93%, OV 85% |
| 05/20 | 04:20:34AM | 7½ (-119) | 7½ (-102) | OV 93%, OV 83% |
| 05/20 | 03:38:47AM | 7½ (-115) | 7½ (-104) | OV 93%, OV 83% |
| 05/20 | 03:31:01AM | 7½ (-116) | 7½ (-104) | OV 93%, OV 83% |
| 05/20 | 03:09:02AM | 7½ (-118) | 7½ (-102) | OV 93%, OV 83% |
| 05/20 | 12:40:29AM | 7½ (-117) | 7½ (-103) | OV 93%, OV 83% |
| 05/20 | 12:36:59AM | 7½ (-116) | 7½ (-103) | OV 93%, OV 83% |
| 05/20 | 12:20:13AM | 7½ (-117) | 7½ (-102) | OV 92%, OV 80% |
| 05/20 | 12:16:58AM | 7½ (-117) | 7½ (-102) | OV 92%, OV 80% |
| 05/19 | 11:59:42PM | 7½ (-117) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:58:28PM | 7½ (-116) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:56:43PM | 7½ (-117) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:55:43PM | 7½ (-117) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:55:28PM | 7½ (-117) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:51:58PM | 7½ (-116) | 7½ (-104) | OV 92%, OV 80% |
| 05/19 | 11:48:43PM | 7½ (-117) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:38:13PM | 7½ (-116) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:37:28PM | 7½ (-117) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 11:28:58PM | 7½ (-116) | 7½ (-103) | OV 92%, OV 80% |
| 05/19 | 10:28:58PM | 7½ (-117) | 7½ (-103) | UN 100%, UN 100% |
| 05/19 | 10:27:43PM | 7½ (-115) | 7½ (-105) | — |
| 05/19 | 05:04:38PM | 7½ (-116) | 7½ (-104) | — |
Pirates vs Cardinals Key Matchups and Handicap
The pitching matchup is where this game is decided, and it heavily favors St. Louis. Michael McGreevy takes the ball for the Cardinals at 3-2 with a 2.10 ERA and an elite 0.88 WHIP across 51.1 innings, with just 34 hits and 11 walks allowed. That is the kind of run-prevention profile that takes high-scoring outcomes off the table almost entirely. Carmen Mlodzinski counters for Pittsburgh at 3-3 with a 4.40 ERA and a 1.44 WHIP over 45 innings, and the gap between those two WHIP numbers is the single most important data point in this matchup. McGreevy is keeping traffic off the bases at a near-ace level, while Mlodzinski is putting runners on at a rate that gives the Cardinals lineup multiple opportunities to break the game open through the middle innings.
St. Louis
St. Louis enters at 28-19 and sits just a half-game back in the NL Central, and Tuesday’s 9-6 extra-inning win shows the lineup can produce in volume when it needs to. Jordan Walker has been the centerpiece, hitting .299 with a .369 OBP, a .576 slugging percentage, 13 home runs and 34 RBI, while Alec Burleson has matched him at 34 RBI and just homered in Tuesday’s win to extend his run as one of the most productive bats on the roster. The Cardinals own 55 home runs to Pittsburgh’s 49 and have the offensive momentum coming off the late-inning surge. The bullpen position is also better for St. Louis after Tuesday’s win, which becomes important if Mlodzinski exits the game early.
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Pittsburgh
The Pirates are 24-24 and have now lost four straight, sitting five games back in the division. The lineup has competitive pieces — Nick Gonzales has been the most reliable contact bat at .314 with a .378 OBP, Brandon Lowe has 12 home runs and 31 RBI, and Oneil Cruz leads the club with 33 RBI while adding 10 home runs of his own. However, Pittsburgh has not been turning that talent into consistent run production during this stretch, and asking the offense to break through against McGreevy’s 0.88 WHIP is the toughest assignment they could draw. Pittsburgh’s team batting line of .250 / .334 / .250 with 235 runs is actually close to St. Louis in raw production, but the matchup variables tilt firmly away from the Pirates Wednesday.
Betting Trends - PIT vs STL
The market is giving a very clean read. The Cardinals moneyline has compressed slightly from -126 to -118, and the most recent split shows a near 50/50 ticket distribution with no real public lean on either side. The total tells the more interesting story. The number drifted from 7½ to 8 during the cycle, and Under juice has been steadily climbing — as high as -119 — across many of the recent timestamps. The most recent reading shows 93% of money and 85% of tickets on the Over, but the line movement on the Under juice has gone against that public action, which often signals sharp money is comfortable laying the under price. With McGreevy on the mound, that is exactly the kind of matchup where the sharp side has historically held up.
Key Injuries and Notes - PIT vs STL
PIT
- Chris Devenski — out (bullpen depth)
- Jared Jones — out (rotation impact)
- Joey Bart — out (catching depth)
- Oddanier Mosqueda — out (bullpen)
- Mike Clevinger — out (rotation depth)
St. Louis
- Masyn Winn — day-to-day
- Ramon Urias — out (lineup depth)
- Lars Nootbaar — out (significant lineup loss)
- Ixan Henderson — out (pitching depth)
- Victor Santos — out (pitching depth)
Pirates vs Cardinals Moneyline and Total Picks
- Moneyline Pick: Cardinals -118 — McGreevy’s 2.10 ERA and 0.88 WHIP combined with Pittsburgh’s four-game losing streak and bullpen-depth concerns gives St. Louis the cleanest path to a win at a fair price. After Tuesday’s extra-inning result, the Cardinals also have the better current bullpen position despite using arms late.
- Total Pick: Under 8 — McGreevy’s command profile is the most important factor on the board here. Even with the public stacking 93% money on the Over, Under juice has climbed steadily, which often signals sharp action. A McGreevy-led performance in the 3-2 to 4-3 range threads the Under at 8 cleanly.
Final Score Prediction
- Cardinals 4, Pirates 3
- St. Louis wins outright
- Game finishes Under 8
The most realistic path here is McGreevy navigating six efficient innings, holding the Pittsburgh lineup to a small handful of damage moments from Cruz, Lowe or Gonzales, while the Cardinals chip away at Mlodzinski with situational hitting from Walker and Burleson. A 4-3 final cleanly threads the moneyline and stays Under at 8, while reflecting the broader profile of these two teams — St. Louis with the better current form and pitching edge, Pittsburgh able to scrap together just enough to keep things tight without breaking through for a multi-run rally.
How to Bet Pirates vs Cardinals
This matchup is set up to reward a multi-angle approach. The Cardinals moneyline at -118 is the most efficient single play, but the Under at 8 has been the steadier line throughout, with juice climbing from -104 to -119 at various intervals before settling. Locking the Under in before any further juice tightening is the right move. Live betting is also worth tracking, because McGreevy historically settles after the first inning, so an early scoreless frame would likely take the live Under off the board quickly.
For bettors who want to spread exposure across multiple platforms without committing significant cash on any single play, social sportsbooks are a smart way to layer the Cardinals moneyline, the Under and a few player props on Jordan Walker and Michael McGreevy strikeouts. If you want the fastest mobile setup to lock in Cardinals ML and Under 8 before any further juice movement, our fliff promo code page is the quickest route to getting set up with added value before first pitch at Busch Stadium.
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