Yankees vs Orioles Prediction Market Odds, August 18, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
▶Yankees | -1.5 39%30% | O 9.5 42%42% | 52%52% | 52% Kalshi |
▶Orioles | +1.5 61%70% | U 9.5 58%58% | 49%49% | 49% Kalshi |
Yankees vs Orioles is a near coin flip at Camden Yards, with New York at 52c and Baltimore at 49c on both Kalshi and Polymarket. That 3c gap undersells an 8.5-game standings edge for the 69-55 Yankees over the 61-64 Orioles, which is the market paying for home field and for a tighter pitching matchup than the records suggest: Carlos Rodon (4-2, 3.30 ERA) against Shane Baz (4-12, 4.00 ERA). The board has traded about $19.3K in lifetime volume across both platforms and resolves when the game goes final on August 18, 2026.
The Yankees vs Orioles board at Camden Yards is priced as close to a coin flip as a two-way baseball market gets, and both exchanges landed on the same read. New York sits at 52c, Baltimore at 49c, with Kalshi and Polymarket quoting identical numbers on each side. That 3c gap is remarkable given the standings: the Yankees are 69-55 and second in the AL East, while the Orioles are 61-64 and fourth, a spread of 8.5 games. The board has drawn roughly $19.3K in lifetime volume across the two platforms.
Yankees vs Orioles Market Context
The market is paying for two things that cut against New York's record. The first is the home park: Baltimore is 32-30 at Camden Yards and gets the last at-bat. The second is that the starting pitching gap is narrower than the win-loss records suggest, with 0.70 of ERA separating the two arms. Strip those out and a 69-55 club facing a 61-64 club would trade meaningfully north of 52c. The exchanges are not doing that, which is the single most useful signal on this board.
Form is a wash. New York is 5-5 over its last ten, dropped two of three at Toronto, then took the finale 4-3 on August 16 before an off day. Baltimore is also 5-5 over its last ten but is hotter into this series, having swept three straight from Tampa Bay from August 14 through August 16 before losing 7-6 on August 17. The Yankees are the better road team than their overall record implies at 38-28 away, which is the strongest argument for the 52c side.
Cross-platform pricing is unusually tight here. The moneyline is quoted at the same two numbers on Kalshi and Polymarket, so there is no platform-selection question on the game winner. The differences show up in the derivative lines: the first-inning run market is 49c on Kalshi and 51c on Polymarket, and Baltimore at -1.5 is 32c on Kalshi against 33c on Polymarket. Those are one and two cent differences, well inside the spread on a market this size, so they read as book noise rather than a genuine disagreement about the game.
Volume distribution says the derivative lines are where the action is. The largest single line on the board is the first-inning run market at about $9.5K, more than the Yankees moneyline leg at $5.5K and the Orioles leg at $2.0K combined. The over 9.5 runs line carries about $4.0K, nearly all of it on Polymarket. Traders are treating this as a scoring-environment market first and a winner market second.
Line movement has been flat. Across every snapshot since the board opened, the Kalshi moneyline held at 52c New York and 49c Baltimore without a single tick, and the Polymarket legs moved no more than 2c in either direction. A held line into game day means the pitching matchup was priced correctly at open and no news has hit since.
Yankees vs Orioles Pitching Matchup
Carlos Rodon takes the ball for New York at 4-2 with a 3.30 ERA. Shane Baz starts for Baltimore at 4-12 with a 4.00 ERA, and those 12 losses are tied for second most in the majors. The record gap is loud, the ERA gap is quiet, and the market is siding with the ERA. A 0.70 run-per-nine edge over roughly five innings is worth about 0.4 runs, which is close to exactly what the 3c moneyline gap and the 39c price on New York at -1.5 imply.
The Baz strikeout ladder is the deepest prop set on this board and it is Kalshi-only. Over 3.5 strikeouts trades at 88c, over 4.5 at 78c, and over 5.5 at 60c, with 7 or more at 43c, 8 or more at 27c, and 10 or more at 9c. That curve puts the market's median at just under six strikeouts, which is a starter the market expects to work into the sixth inning rather than one it expects to get chased early. For a pitcher carrying a 4-12 record, that is a vote of confidence in the stuff over the results, and it is consistent with Baltimore trading at 49c rather than the low 40s.
The run environment lines back this up. Over 8.5 total runs trades at 52c on both books, over 9.5 at 42c on both, and over 7.5 at 60c Kalshi against 61c Polymarket. That is a market pricing a roughly nine-run game, which for Camden Yards in August is a neutral-to-slightly-under read. The first-five-innings total over 4.5 sits at 51c, so the market expects the scoring to arrive evenly rather than in a late bullpen collapse.
The run line is the cleanest expression of the read. New York at -1.5 is 39c and Baltimore at -1.5 is 32c. Divide those by the respective moneyline prices and the market gives New York a 75% chance of winning by two or more given a win, against 65% for Baltimore. That asymmetry is the Yankees lineup, not the Yankees rotation, and it is the reason the run line is a sharper way to express a New York opinion than the 52c moneyline.
When the Yankees vs Orioles Market Resolves
First pitch is 6:35pm ET on Tuesday, August 18, 2026 at Oriole Park at Camden Yards. The moneyline resolves to the team that wins the game, with each winning contract paying $1 per share and the losing side settling at $0. The run line settles on the final margin of victory, and the total and team-total markets settle on combined or per-team runs scored in the official final score, including extra innings. Kalshi and Polymarket both settle off the official MLB box score once the game is final. If the game is postponed, suspended, or shortened before it becomes an official game, each platform applies its own void or reschedule rule, so check the specific contract terms on the board above before assuming a rainout voids your position.
Key Yankees vs Orioles Catalysts
- Rodon workload: New York at 52c is largely a bet on Carlos Rodon (3.30 ERA) handing a lead to the bullpen rather than the Yankees outslugging Baltimore.
- Baz strikeout ladder: the 60c price on over 5.5 strikeouts is the market saying Shane Baz (4.00 ERA) works deep, which is the same assumption holding Baltimore at 49c.
- Camden Yards run environment: over 8.5 runs at 52c and over 9.5 at 42c set a neutral bar, and any late lineup or weather news moves the total before it moves the winner.
- Yankees road form: New York is 38-28 away and 31-27 at home, so the road split is the strongest standings argument for the favorite side.
- Baltimore momentum: the Orioles took three straight from Tampa Bay before dropping the August 17 finale, and a fourth win in five games would be the first real pressure on the 49c price.
- Cross-platform convergence: the moneyline is identical on both books, so any post-lineup divergence of 3c or more is the first sign one side of the market has new information.
Related Yankees vs Orioles Markets
Both clubs carry season-long boards that this game feeds directly. The Yankees playoff market and the Orioles playoff market are the highest-leverage of them, since a head-to-head AL East result moves both sides of the same ledger. The Yankees 2026 win total and the Orioles 2026 win total price the same question over a longer horizon and are the better place to express a view on either roster rather than on one starting pitcher. For the top of the sport, the 2026 World Series board carries the deepest baseball volume on either exchange. Every live MLB board, including tonight's full slate, sits on the MLB hub.
Resolution Criteria
Resolves to the team that wins the game between the New York Yankees and Baltimore Orioles at Oriole Park at Camden Yards, first pitch 6:35pm ET on Tuesday, August 18, 2026. The winning team's moneyline contract pays $1 per share and the losing contract settles at $0. Run line contracts settle on the final margin of victory, and total and team-total contracts settle on runs scored in the official final score, including any extra innings. Both Kalshi and Polymarket settle off the official MLB box score once the game is declared final. If the game is postponed, suspended, or called before it reaches official-game length, each platform applies its own void, rollover, or reschedule rule, so the specific contract terms govern rather than the scheduled date.
Key Factors
- Carlos Rodon start quality (4-2, 3.30 ERA) is the core of the 52c Yankees price
- Shane Baz strikeout ladder prices a median just under six strikeouts (over 5.5 at 60c)
- Camden Yards run environment: over 8.5 runs at 52c, over 9.5 at 42c on both books
- Yankees road split (38-28 away) versus Orioles home split (32-30) is the standings argument
- Baltimore momentum after three straight wins over Tampa Bay, August 14 through August 16
- Moneyline is identical on Kalshi and Polymarket, so any 3c divergence signals new information
What are the current Yankees vs Orioles odds?
As of August 18, 2026, the New York Yankees trade at 52c and the Baltimore Orioles at 49c, with Kalshi and Polymarket quoting the same numbers on both sides. That is an implied win probability of roughly 52% for New York and 49% for Baltimore.
Who is favored in Yankees vs Orioles?
New York is the narrow favorite at 52c against Baltimore at 49c. The 3c gap is smaller than the 8.5-game standings separation between the 69-55 Yankees and the 61-64 Orioles because Baltimore is at home and the starting pitchers are separated by only 0.70 of ERA.
Where can I trade the Yankees vs Orioles market?
The game trades on both Kalshi and Polymarket. Kalshi carries the deeper derivative set, including the Shane Baz strikeout ladder and team totals, while Polymarket holds most of the volume on the over 9.5 runs line at about $4.0K.
When does the Yankees vs Orioles market resolve?
First pitch is 6:35pm ET on Tuesday, August 18, 2026 at Oriole Park at Camden Yards. Both platforms settle the moneyline, run line, and totals off the official MLB box score once the game is final, typically within a few hours of the last out.
What is the Yankees vs Orioles run line and total?
New York at -1.5 trades at 39c and Baltimore at -1.5 at 32c. The game total is set around nine runs, with over 8.5 at 52c and over 9.5 at 42c on both exchanges.
What should I watch before Yankees vs Orioles resolves?
Watch the posted lineups and any late bullpen news, since the moneyline held at 52c and 49c through every snapshot since the board opened. A move of 3c or more on either exchange after lineups drop is the clearest sign the market has repriced the starting pitching matchup.