| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
Pirates | -1 β | O 0.5 β | 100%100% | 100% Kalshi |
Padres | +1 β | U 0.5 β | 0%0% | β |


| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
Pittsburgh Pirates | -1 β | O 0.5 β | 100%100% | 100% Kalshi |
San Diego Padres | +1 β | U 0.5 β | 0%0% | β |
Pittsburgh at San Diego is a genuine pick-em: 51c Pirates and 50c Padres on Kalshi, 50c and 51c on Polymarket, with the two order books never more than a cent apart. The separation is in the run line, where Pittsburgh -1.5 (37.5c) prices above San Diego -1.5 (32c) off an even moneyline. Braxton Ashcraft (3.68 ERA, 1.08 WHIP) faces Robbie Ray (3.20 ERA, 1.31 WHIP) at Petco Park, first pitch 9:40 PM ET on Monday, August 24, 2026. The live board above carries current prices on both platforms.
Pittsburgh at San Diego is a pick-em in the most literal sense. Kalshi prices the Pirates at 51c and the Padres at 50c. Polymarket prices the same two outcomes at 50c and 51c. Four quotes across two independent order books, none of them more than a cent from even money, on a game between a 71-60 home club chasing October and a 63-69 road club that has lost three in a row. First pitch is 9:40 PM ET (6:40 PM PT) Monday at Petco Park, and the board carries about $22.7K in lifetime volume across the two platforms. The rest of the night is on today's MLB slate.
San Diego hands the ball to left-hander Robbie Ray (11-7, 3.20 ERA, 1.31 WHIP), who has struck out 117 in 137.2 innings. Pittsburgh counters with right-hander Braxton Ashcraft (13-5, 3.68 ERA, 1.08 WHIP), 159 strikeouts in 149.1 innings and the leader in both wins and rotation ERA on a staff missing Mitch Keller to the 60-day injured list.
The ERA gap says Ray and the underlying line says Ashcraft. Ashcraft has walked 33 batters all season against Ray's 68, which accounts for the entire WHIP difference between them. What eats that back up is contact quality: Ashcraft has allowed 21 home runs to Ray's 18 in eight fewer innings, and he carries that profile into Petco Park, the one venue on the schedule where the trade works in his favor.
The strikeout ladder disagrees with the season rates. Ashcraft misses more bats (9.6 per nine against Ray's 7.6), yet Kalshi prices Ray at 70c to reach five strikeouts and 52c to reach six, against 63c and 45c for Ashcraft. That is the market adjusting for the lineups rather than the arms. San Diego sends Manny Machado (24 home runs, 72 RBI) and Fernando Tatis Jr. (.290) at Ashcraft; Pittsburgh answers with Brandon Lowe (27 home runs, 80 RBI) and Nick Gonzales (.307) in a lineup that has produced a 29-37 road record.
Form runs against the price too. San Diego has won three straight, including a doubleheader sweep of Minnesota on Sunday, August 23, 2026 by 7-5 and 8-1. Pittsburgh dropped all three at Dodger Stadium, 5-4 in ten innings, 4-3, and 4-0, scoring seven runs across the series. San Diego also leads the season series 2-1 from an April set in Pittsburgh.
The moneyline is even and the run line is not, which is where the actual read lives. Pittsburgh at -1.5 trades at 37.5c (38c Kalshi, 37c Polymarket). San Diego at -1.5 trades at 32c on both books. Same coin flip on the win, five and a half cents of separation on the multi-run win, in favor of the road team. Polymarket's after-five market says it from the other direction: Pittsburgh leading after five innings is 45c, San Diego 39c, tied 15c.
The total is 7.5, matching the DraftKings number, and it is priced dead even at 49c to the over on both platforms. Over 8.5 sits at 41.5c and over 6.5 at 61c, a tight ladder with no kink in it. Kalshi's team totals split the number almost exactly down the middle: Pittsburgh over 3.5 runs at 53c, San Diego over 3.5 runs at 50c. Weather is not a variable, with the ESPN game forecast at 79F, no precipitation, and 12 mph gusts.
Line movement is bounded by what the board has actually captured. The snapshot series covers roughly 100 minutes on the evening of Sunday, August 23, 2026, and across every capture in it the moneyline did not move: 51c and 50c on Kalshi, 50c and 51c on Polymarket, unchanged. The full-game total held at 49c on both books. The one line that drifted was the first-inning run market, 45c down to 43c on Polymarket, and that market is the second-busiest on the board at $5.8K of the $22.7K lifetime total. That is a short overnight window rather than a full session, so it is evidence the book opened stable, not evidence of a day-long trend.
Cross-platform separation is effectively nil here. One cent on the moneyline, one cent on the run line, zero on the total. That is unusual for a game board this size and it means neither venue is offering a better number on the primary market. The places the two platforms differ are structural rather than priced: Kalshi carries the strikeout and hitter props, the team totals, and the full over ladder from 1.5 to 11.5 runs, while Polymarket carries the after-five three-way and matching core lines.
The moneyline resolves the night of Monday, August 24, 2026, when the game goes final at Petco Park. The team that wins pays $1 per share and the losing side pays zero, with no draw outcome in baseball. The run line settles on the final margin, so Pittsburgh -1.5 needs a win by two or more, and the total settles on combined runs, so over 7.5 needs eight. The first-inning and first-five markets settle on the score at those checkpoints, which means they resolve hours before the moneyline does. Kalshi and Polymarket both settle once the game is official.
Ray's command: 68 walks in 137.2 innings is the largest single variable on the card, and it is the whole gap between his 3.20 ERA and his 1.31 WHIP.
Ashcraft's home run rate: 21 allowed in 149.1 innings, thrown into the one park on the schedule most likely to hold them.
The run-line split: Pittsburgh -1.5 at 37.5c against San Diego -1.5 at 32c off an even moneyline is the market's only real directional statement.
San Diego bullpen load: the Padres worked a doubleheader on Sunday with Jason Adam and Joe Musgrove both on the 60-day injured list.
Pittsburgh road form: 29-37 away from home and three straight losses at Dodger Stadium with seven total runs scored.
First-inning liquidity: the run-in-the-first market at 43.5c holds $5.8K of the board's $22.7K lifetime volume, which makes it the fastest read on how the night is being traded.
San Diego at 71-60 is why this game carries stakes past the final out. The Padres are a live entry on the 2026 NL West board and the NL pennant market, and a late-August night against a sub-.500 opponent moves those prices more than it moves this one. Pittsburgh at 63-69 is six games under .500 and no longer a factor on the 2026 World Series board, which turns this series into a rotation audition rather than a standings fight. Cross-platform pricing for every game on the schedule sits on the MLB hub.
The moneyline resolves to the team that wins the game at Petco Park on Monday, August 24, 2026, first pitch 9:40 PM ET. Each winning team contract pays $1 per share and the other resolves to zero; baseball has no draw outcome, so extra innings decide the market. The run line settles on the final margin, meaning Pittsburgh -1.5 requires a win by two or more runs and San Diego -1.5 requires the same. The total settles on combined runs by both teams, so over 7.5 requires eight or more. First-inning and first-five-inning markets settle on the score at those checkpoints and resolve before the game ends. Kalshi and Polymarket both settle once the game is official, which for a rain-shortened game means after five completed innings. If the game is postponed or suspended, each platform applies its own postponement rule, which generally moves settlement to the completed makeup game or voids the contract.
As of the evening of August 23, 2026 the game is a pick-em. Kalshi has Pittsburgh at 51c and San Diego at 50c, and Polymarket has Pittsburgh at 50c and San Diego at 51c. The live board above carries current prices from both platforms.
It resolves when the game goes final at Petco Park on Monday, August 24, 2026, with first pitch at 9:40 PM ET (6:40 PM PT). The first-inning and first-five-inning markets settle earlier in the night, at their own checkpoints.
Both Kalshi and Polymarket list the core board: moneyline, run line, total at 7.5, first five innings, and a first-inning run market. Kalshi additionally carries team totals and strikeout and hitter props. The board has taken about $22.7K in lifetime volume across the two venues.
Neither side, by any meaningful margin. Both teams price at roughly 50% implied probability on both platforms. ESPN's matchup predictor gives San Diego 52.7%, and DraftKings listed Pittsburgh at -111 with San Diego at -108 on a 7.5 total.
Robbie Ray's command is the biggest variable, with 68 walks in 137.2 innings against a Pittsburgh lineup that is 29-37 on the road. Also watch the run line: if the moneyline stays even but Pittsburgh -1.5 keeps pricing above San Diego -1.5, the market is telling you which team it expects to win by multiple runs.