| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
▶Marlins | -1.5 31%43% | O 1 52%53% | 54%54% | 54% Kalshi |
▶Reds | +1.5 69%57% | U 1 48%47% | 48%47% | 48% Kalshi |
Miami is the 54c favorite on the road in the series finale at Great American Ball Park, a flip from the first two games when Cincinnati was the 52c and then 51c home favorite. The Marlins (63-61) are 25-36 away from home and the market backs them anyway, on the strength of Eury Perez (3.39 ERA) over Nick Lodolo (4.86 ERA). Cincinnati (59-63) prices at 47c after splitting the first two games. Kalshi and Polymarket agree to the cent on both sides. The live board above carries the current moneyline, run line, totals, and props.
Miami is the 54c road favorite at Great American Ball Park on Sunday, a role reversal from the first two games of this series, when Cincinnati was priced at 52c and then 51c as the home side. The Marlins (63-61) carry a 25-36 road record into the finale and the market is backing them anyway, which is the single most interesting thing on this board. The Reds (59-63) sit at 47c after splitting the first two games, winning 1-0 on Friday and losing 8-4 on Saturday. First pitch is 1:40 p.m. ET.
The Marlins vs Reds moneyline is a genuine coin-flip with a lean. Miami prices at 54c and Cincinnati at 47c, a 101c two-sided sum that leaves about 1c of overround, so the implied read on Miami is roughly 53%. Kalshi and Polymarket land on the exact same numbers on both sides, 54c and 54c on Miami, 47c and 47c on Cincinnati. There is no cross-platform separation to work with here, which is itself a signal: two independent books with different user bases arrived at the same price and stayed there.
The line has not moved. Miami sat at 54c across all eleven Kalshi snapshots captured overnight, and Polymarket matched at 54c the moment its book came online. Cincinnati held 47c through eight snapshots. A flat line into a Sunday afternoon start usually means the probable pitchers were already priced in and nothing on the injury or lineup side has forced a re-rate.
The records tell a split story. Miami is 38-25 at home and 25-36 on the road, an 11-game swing in win rate by venue, and yet the market has them favored in Cincinnati. Cincinnati is 30-32 at home and 29-31 away, essentially venue-neutral. The market is pricing this on the mound, not on the building.
Eury Perez starts for Miami at 6-9 with a 3.39 ERA. Nick Lodolo starts for Cincinnati at 3-2 with a 4.86 ERA. That 1.47-run ERA gap is the reason a team with a 25-36 road record is the favorite in someone else's park, and it is close to the entire pricing argument on this game.
The strikeout props back up that read. Perez is priced at 68c to record 6 or more strikeouts and 51c for 7 or more, putting his market midpoint right at 7 punchouts. Lodolo sits at 71c for 4 or more and 52c for 5 or more, a midpoint of 5. The books are giving Perez roughly two extra strikeouts over the same nominal workload, and that spread is consistent with the ERA gap rather than an outlier read.
Cincinnati's offense is the counterweight. Sal Stewart leads the Reds with 26 home runs and 91 RBIs, and Elly De La Cruz is hitting .264 and prices at 62c for 1 or more hits, 45c for 2 or more total bases, and 21c to go deep. Miami counters with Otto Lopez at .308 with 53 RBIs and Heriberto Hernandez at 17 home runs. On raw power, Cincinnati is the deeper lineup, which is why this sits at 54c rather than 60c.
The run line prices Miami at 43c to win by 2 or more and Cincinnati at 31c to do the same. That 12c gap is wider than the 7c moneyline gap, meaning the market thinks Miami is more likely to win comfortably than Cincinnati is, not just more likely to win.
The game total settles right around 9.5 runs. Over 9.5 trades at 47c and Over 8.5 at 57.5c, so the implied number sits a shade under 9.5 in a park that plays small. The first-five-innings total is priced at 52.5c for Over 4.5, which is the cleanest expression of the starter matchup because it stops before either bullpen enters.
The most traded single line on this board is not the moneyline. The first-inning run market, asking whether either team scores in the top or bottom of the first, has taken roughly $6.2K of the board's $11.6K in total volume and prices at 52.5c (52c Kalshi, 53c Polymarket). Polymarket also carries a standalone leading-after-five market that Kalshi does not list, with Miami at 46c, Cincinnati at 41c, and a tie at 17c. Those are one-book prices by design, not a broken board.
The moneyline resolves to whichever team wins the game on August 16, 2026, at Great American Ball Park, scheduled for 1:40 p.m. ET. Winning contracts pay $1 per share and the losing side settles at $0. Run line and total contracts settle against the final official score including extra innings, so a 9-8 game in eleven innings counts every run scored. Settlement happens on both platforms once the game is declared final on the scheduled date.
Starter ERA gap: Perez at 3.39 against Lodolo at 4.86 is the whole pricing argument for the road favorite.
Miami road split: the Marlins are 25-36 away from home versus 38-25 at home, the strongest case against the 54c price.
Cincinnati power: Sal Stewart at 26 home runs and 91 RBIs in a park that rewards fly balls is the main path to a Reds cover.
Flat line: Miami held 54c across eleven overnight snapshots on Kalshi with Polymarket matching exactly, so any pregame move is new information.
First-inning market: at 52.5c it holds more than half the board's volume, so it is where lineup and weather news shows up first.
Follow both clubs beyond this game on the Miami Marlins hub and the Cincinnati Reds hub, which carry every active market on each team across Kalshi and Polymarket. The full slate of Sunday moneylines, run lines, and totals sits on the MLB league hub, and the other National League series finale worth a look is Cardinals vs Cubs at Wrigley. Every live game board across leagues is on today's slate.
Resolves to the team that wins the game between the Miami Marlins and the Cincinnati Reds on August 16, 2026, at Great American Ball Park in Cincinnati, scheduled for 1:40 p.m. ET. Winning moneyline contracts pay $1 per share and the losing side settles at $0. Run line contracts settle on the final margin and total contracts settle on the combined final score, in both cases including any extra innings. First-five-innings markets settle on the score after five completed innings. If the game is postponed, suspended, or shortened, each platform applies its own published rules for MLB games, which generally void or roll contracts that cannot settle against an official final score on the scheduled date.
As of August 16, 2026, Miami is the 54c favorite and Cincinnati is 47c. Both Kalshi and Polymarket price the two sides identically at 54c and 47c, leaving about 1c of overround on the two-sided market.
Miami is favored at 54c, an implied probability near 53% after adjusting for the 101c two-sided sum. That makes the Marlins a road favorite despite a 25-36 record away from home.
Eury Perez starts for Miami at 6-9 with a 3.39 ERA and Nick Lodolo starts for Cincinnati at 3-2 with a 4.86 ERA. First pitch at Great American Ball Park is 1:40 p.m. ET.
Miami at -1.5 prices at 43c and Cincinnati at -1.5 prices at 31c. The game total sits just under 9.5 runs, with Over 9.5 at 47c and Over 8.5 at 57.5c as of August 16, 2026.
Both Kalshi and Polymarket list the moneyline, run line, and game total. Kalshi additionally lists strikeout and hitter props, and Polymarket carries a standalone leading-after-five-innings market with Miami at 46c.
Watch the first-inning run market, which holds roughly $6.2K of the board $11.6K in volume and reprices first on lineup and weather news. A break from the flat 54c Miami line would be the first sign of new information.