The St. Louis Cardinals carry a hot bat and a red-hot starter into Great American Ball Park on Tuesday, and the betting market has taken notice. St. Louis sits at -121 on the moneyline as a road favorite over a Cincinnati Reds team that cannot buy a run right now. The total opened at nine and has already ticked down to 8.5, a small move that says plenty about this pitching matchup. We like one side and one number here, and both trace back to the same arm on the mound for the visitors.
Last Updated: Tuesday, August 18, 2026
St. Louis Cardinals vs. Cincinnati Reds — Time & How to Watch
| Where | Great American Ball Park, Cincinnati, Ohio |
| When | August 18, 2026 — 6:40 PM ET |
| TV | Reds.TV, Cardinals.TV, MLB.TV |
St. Louis Cardinals vs. Cincinnati Reds Betting Preview
Pitching is the story, and it tilts hard toward St. Louis. Kyle Leahy takes the ball at 9-4 with a 3.38 ERA and a 1.34 WHIP, and his recent form is even sharper than those season marks. Over his last nine starts he owns a 1.52 ERA, a 0.99 WHIP and a 46-to-9 strikeout-to-walk ratio across 47.1 innings. He worked five innings of one-run ball against Philadelphia on August 12 and struck out eight without a walk against Colorado on August 7. You can track Leahy’s recent surge start by start.
Andrew Abbott counters for Cincinnati with a 4.13 ERA, a 1.42 WHIP and a walk problem that keeps resurfacing. He has issued 64 free passes in 133 innings, and his command wobbled again when the Chicago White Sox tagged him for five runs in 4.1 innings on August 13. He also walked five in a loss to Pittsburgh on August 1. Abbott can miss bats, yet the traffic on the bases plays poorly in a small ballpark.
The two clubs are trending in opposite directions. St. Louis (64-62) has won seven of its last 10 and took the series opener 2-1 on Monday, outscoring opponents by a wide margin during a recent four-of-five run. Cincinnati (60-65) has dropped seven of 10 while its offense went cold, a slump that has the Reds near the bottom of the league in August run production. Both teams remain on the fringe of the NL Central wild-card chase, but the momentum belongs to the visitors. Rookie of the Year contender JJ Wetherholt has scuffled at the plate this month, while Cincinnati’s Sal Stewart is one of the few Reds bats still producing. For more of our latest MLB predictions, browse the daily slate.
St. Louis Cardinals vs. Cincinnati Reds Odds
| Run Line | Moneyline | Total | |
|---|---|---|---|
| Cardinals | -1.5 (+135) | -121 | U 8.5 (-110) |
| Reds | +1.5 (-160) | +101 | O 8.5 (-110) |
Odds accurate as of Tuesday, August 18, 2026 via TheSpread.com. Odds change, get the latest MLB Odds – Futures – Props
St. Louis Cardinals vs. Cincinnati Reds — Who Is the Public Betting?
| Cardinals | 61% | 39% | Reds |
See the latest MLB Public Betting Splits and make smarter wagers!
Cardinals vs. Reds Prediction — Does the Hot Team Have the Edge on the Mound?
The case for St. Louis starts with the arm advantage. Leahy is pitching like a different tier of starter right now, and he draws a Cincinnati lineup that has struggled to string hits together all month. A control starter who works deep also keeps the Cardinals’ bullpen out of the game. Against an Abbott who walks hitters in a hitter’s park, St. Louis holds both the better starter and the hotter offense.
The counter-case is real, though. Cincinnati is at home, where even a cold lineup can wake up quickly in a bandbox, and the Reds still hit for power. Abbott has quality starts on his ledger this season, including a strong six-plus-inning effort against the Athletics on August 6. A road favorite laying juice is never a sure thing, and one swing can flip a low-scoring game late. Even so, the price is fair for the side with the clearer edge, and the market has nudged toward the Cardinals since the open.
The Pick: Cardinals Moneyline (-121)
Cardinals vs. Reds Prediction — Will the Launching Pad Stay Quiet?
The number that moved is the one worth watching. This total opened at nine and dropped to 8.5, with money leaning under despite a venue that usually inflates run expectation. The logic holds up. Leahy has been stingy, Cincinnati’s bats are in a deep freeze, and the Reds have managed only a few runs per game during their recent slide. When a strong starter meets a slumping lineup, the under gets interesting even in Cincinnati.
The risk is the ballpark itself. Great American Ball Park ranks among the most homer-friendly parks in the majors, and the Reds’ 20 home runs in August show they can score in bunches without stringing hits together. Abbott’s walks can also hand the Cardinals’ hot lineup free base runners and a crooked inning. This is a lean rather than a strong stance, but the pitching edge and the recent scoring trends line up with the market move toward the under.
The Pick: Under 8.5 (-110)
Final Thoughts and Bonus Angle
For bettors who want more upside on the same read, the run line offers a plus-money route. St. Louis at -1.5 pays +135, and as the road team the Cardinals bat in the ninth even with a lead, giving them extra chances to stretch a one-run edge to two. The trade-off is variance, since they must win by multiple runs and any deficit can vanish quickly in a homer park. Consider it the aggressive version of siding with Leahy, not a separate read.
Bonus Pick: Cardinals Run Line -1.5 (+135)
To recap the card: the Cardinals moneyline at -121 is the featured play, the under 8.5 is the total lean, and the Cardinals run line -1.5 at +135 is the higher-variance bonus. All three rest on the same idea, that Leahy controls the game while Cincinnati’s cold offense cannot keep pace. Confirm both starters before betting, since a late scratch would change the read.
MLB Cardinals vs. Reds FAQ: Tuesday August 18, 2026
What time does the Cardinals vs. Reds game start?
First pitch is set for 6:40 PM ET on Tuesday, August 18, 2026, at Great American Ball Park in Cincinnati. It is the second game of the teams’ series, and the Reds hold home-field advantage for this NL Central matchup.
What channel is the Cardinals vs. Reds game on?
The game airs on the regional club broadcasts, Reds.TV and Cardinals.TV, with streaming available through MLB.TV. Local market blackout rules may apply, so check availability in your area before the 6:40 PM ET first pitch. There is no national over-the-air broadcast scheduled for this game.
Who is pitching in the Cardinals vs. Reds game?
St. Louis starts Kyle Leahy (9-4, 3.38 ERA, 1.34 WHIP), who has been one of the majors’ hottest arms over his last nine outings. Cincinnati counters with Andrew Abbott (6-7, 4.13 ERA, 1.42 WHIP), whose command has wavered across several recent starts.
Where are the Cardinals and Reds playing today?
The game is at Great American Ball Park in Cincinnati, Ohio, the Reds’ home stadium beside the Ohio River. It is regarded as one of the more hitter-friendly ballparks in Major League Baseball, especially for home runs, which shapes how oddsmakers set the run total.
Who won the last meeting between the Cardinals and Reds?
St. Louis won the most recent meeting 2-1 on Monday, August 17, 2026, in the opener of this series, with pitching carrying the day. The Cardinals have controlled the season series against Cincinnati, and the Reds’ offense has gone quiet during the current losing stretch.