St. Louis Cardinals vs Cincinnati Reds Picks, Prediction, Odds, and Line Movement for Thursday August 20 2026

Thursday's St. Louis Cardinals vs Cincinnati Reds picks for August 20, 2026, have been rebuilt around the latest full-game prices and the current pitching matchup. St. Louis enters 65-63 while Cincinnati is 61-66. Bettors can also review our MLB player props and daily MLB picks and predictions before first pitch.

Best Available Odds for St. Louis Cardinals vs Cincinnati Reds

• Moneyline: St. Louis -109 | Cincinnati +100
• Total: 9.0
• Featured Market: St. Louis F5 -0.5 (+110)

Game Info

• Date: Thursday, August 20, 2026
• Time: 12:40 p.m. EDT
• Location: Great American Ball Park, Cincinnati, Ohio
• Probable Pitching: Michael McGreevy (RHP) vs Brady Singer (RHP)

St. Louis Cardinals vs Cincinnati Reds Preview

The first-five market is the cleanest way to separate the part of this matchup that favors St. Louis from the part that remains much less predictable. Cincinnati has been capable of turning games late, and that makes a full-game Cardinals ticket more dependent on relief pitching than the starting-pitcher comparison alone suggests. St. Louis also has a road profile that has been more reliable early than Cincinnati has been at home in the same window. That does not guarantee an early lead, but it makes plus money on the Cardinals to be ahead after five more attractive than paying for a full nine innings.

Relevant Betting Trends

The MLB betting trends add useful context to this matchup, but they are not a substitute for the current pitchers and price. Home, road, first-five and team-total records describe how previous wagers performed. They are most useful when they point in the same direction as the current baseball matchup, and they should be treated more cautiously when the present starter or market tells a different story.

Odds and Line Movement

The earlier board showed St. Louis -107 with Cincinnati -103 and a total of 9.5. The latest board has St. Louis at -109 and Cincinnati +100, while the total has dropped from 9.5 to 9. That half-run reduction is the more meaningful move because the side remains close to a pick between the two clubs. Line movement should not be treated as proof that one side is correct. Its value is in showing how the cost of the same opinion has changed and whether a different market now gives bettors a more efficient way to express the matchup.

Starting Pitching Matchup

MLB lists McGreevy at 5-9 with a 3.48 ERA and 91 strikeouts, while Singer is 5-11 with a 4.66 ERA and 104 strikeouts. McGreevy has been the steadier run-prevention option, and that matters most during the first five innings before each bullpen can reshape the matchup. Singer can still generate weak contact when his command is sharp, but the larger season-long margin for error belongs to St. Louis. The Cardinals do not need a dominant outing from McGreevy. They need him to avoid free passes, keep Cincinnati from stacking extra-base hits, and give the offense repeated chances to create a lead before the game reaches the middle relievers.

Bullpen and Late-Inning Outlook

The bullpen question is especially important because a narrow first-half advantage can disappear quickly at Great American Ball Park. The park rewards lifted contact, and one mistake after a starter exits can change a low-scoring game. Cincinnati therefore has a plausible full-game comeback route even if Singer is outpitched early. That is precisely why the recommended bet stops after five. St. Louis can win the handicap by getting one productive turn through the lineup, forcing Singer into traffic, and letting McGreevy work with a lead without asking the Cardinals relief corps to protect it for four more innings.

What Will Decide the Game

The key tactical battle is Cincinnati's ability to make McGreevy work from the stretch. If the Reds can create walks and singles in front of their extra-base threats, they can neutralize the starting advantage. If McGreevy stays ahead in counts, St. Louis should have the better chance to dictate the first half. On the other side, the Cardinals need to avoid letting Singer settle into quick innings. Foul balls, deep counts, and traffic at the top of the order would give St. Louis several paths to score before the fifth is complete.

Expected Game Script

The most likely script has McGreevy limiting Cincinnati to one early run while St. Louis creates a couple of scoring opportunities against Singer. The Cardinals take a 2-1 or 3-1 lead into the middle innings, which is enough for the recommended wager even if the Reds make the full game uncomfortable later. The score projection is meant to stay consistent with the recommended wager rather than pretend every inning can be forecast exactly.

Best Bet - St. Louis F5 -0.5 (+110)

St. Louis F5 -0.5 at +110 is the preferred play. The price is still plus money, the starting-pitcher comparison favors the Cardinals, and the bet avoids the late-inning phase where Cincinnati has a clearer path to flip the matchup. The risk is straightforward: a tie after five loses the ticket, so St. Louis must convert at least one of its early chances rather than merely producing better contact.

Prediction: St. Louis Cardinals 5, Cincinnati Reds 3