MLB Preseason Odds (MT, US)
April 2026
27 matches · 2 days
27 upcoming matches.
We compare MLB Preseason odds across 3 bookmakers in MT, United States
Get these odds overlaid directly on BetOpenly, Kalshi, Polymarket.
OddsGuard delivers comprehensive MLB Preseason odds comparison for Montana bettors, aggregating lines from Sports Bet Montana and other regulated sportsbooks operating in the state. Since Montana legalized online sports betting, bettors can access real-time line movements and identify the best value across multiple licensed operators without leaving the platform.
While Montana lacks a local MLB franchise, Treasure State baseball fans gravitate toward regional powerhouses like the Colorado Rockies and Seattle Mariners, with many following American League West and National League West divisions closely. Spring training generates significant betting interest as Montana's harsh winters give way to baseball season, making MLB Preseason odds Montana markets particularly active among bettors eager to capitalize on early-season inefficiencies and roster uncertainty that creates value opportunities.
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Today
St. Louis Cardinals vs Seattle Mariners
Sat, Apr 25, 6:16 PM
| Bookmaker | St. Louis Cardinals | Seattle Mariners |
|---|---|---|
| Best Odds | -833 Kalshi | +809 Polymarket |
 Kalshi | -833 | +733 |
 Polymarket | -909 | +809 |
Toronto Blue Jays vs Cleveland Guardians
Sat, Apr 25, 7:08 PM
| Bookmaker | Toronto Blue Jays | Cleveland Guardians |
|---|---|---|
| Best Odds | -122 Polymarket | +117 Kalshi |
| Kalshi | -127 | +117 |
| Polymarket | -122 | +117 |
San Francisco Giants vs Miami Marlins
Sat, Apr 25, 8:08 PM
| Bookmaker | San Francisco Giants | Miami Marlins |
|---|---|---|
| Best Odds | -104 Kalshi | +100 Kalshi |
| Kalshi | -104 | +100 |
| Polymarket | -104 | +100 |
Chicago White Sox vs Washington Nationals
Sat, Apr 25, 8:11 PM
| Bookmaker | Chicago White Sox | Washington Nationals |
|---|---|---|
| Best Odds | -156 Polymarket | +150 Polymarket |
| Polymarket | -156 | +150 |
Tampa Bay Rays vs Minnesota Twins
Sat, Apr 25, 8:11 PM
| Bookmaker | Tampa Bay Rays | Minnesota Twins |
|---|---|---|
| Best Odds | -133 Kalshi | +133 Polymarket |
| Kalshi | -133 | +122 |
| Polymarket | -145 | +133 |
Arizona Diamondbacks vs San Diego Padres
Sat, Apr 25, 10:06 PM
| Bookmaker | Arizona Diamondbacks | San Diego Padres |
|---|---|---|
| Best Odds | -109 Polymarket | +108 BetOpenly |
 BetOpenly | -110 | +108 |
| Kalshi | -109 | +104 |
| Polymarket | -109 | +104 |
Texas Rangers vs Oakland Athletics
Sat, Apr 25, 11:06 PM
| Bookmaker | Texas Rangers | Oakland Athletics |
|---|---|---|
| Best Odds | -114 BetOpenly | +116 BetOpenly |
| BetOpenly | -114 | +116 |
| Kalshi | -118 | +113 |
| Polymarket | -118 | +113 |
Milwaukee Brewers vs Pittsburgh Pirates
Sat, Apr 25, 11:11 PM
| Bookmaker | Milwaukee Brewers | Pittsburgh Pirates |
|---|---|---|
| Best Odds | -130 BetOpenly | +128 BetOpenly |
| BetOpenly | -130 | +128 |
| Kalshi | -133 | +127 |
| Polymarket | -133 | +127 |
Houston Astros vs New York Yankees
Sat, Apr 25, 11:11 PM
| Bookmaker | Houston Astros | New York Yankees |
|---|---|---|
| Best Odds | +138 Polymarket | -141 BetOpenly |
| BetOpenly | +134 | -141 |
| Kalshi | +133 | -145 |
| Polymarket | +138 | -145 |
Kansas City Royals vs Los Angeles Angels
Sat, Apr 25, 11:11 PM
| Bookmaker | Kansas City Royals | Los Angeles Angels |
|---|---|---|
| Best Odds | -139 Kalshi | +138 BetOpenly |
| BetOpenly | -141 | +138 |
| Kalshi | -139 | +133 |
| Polymarket | -139 | +133 |
Los Angeles Dodgers vs Chicago Cubs
Sat, Apr 25, 11:16 PM
| Bookmaker | Los Angeles Dodgers | Chicago Cubs |
|---|---|---|
| Best Odds | -114 BetOpenly | +117 Kalshi |
| BetOpenly | -114 | +114 |
| Kalshi | -122 | +117 |
| Polymarket | -118 | +113 |
Atlanta Braves vs Philadelphia Phillies
Sat, Apr 25, 11:16 PM
| Bookmaker | Atlanta Braves | Philadelphia Phillies |
|---|---|---|
| Best Odds | -122 Polymarket | +122 Kalshi |
| BetOpenly | -125 | +114 |
| Kalshi | -127 | +122 |
| Polymarket | -122 | +117 |
Cincinnati Reds vs Detroit Tigers
Sat, Apr 25, 11:16 PM
| Bookmaker | Cincinnati Reds | Detroit Tigers |
|---|---|---|
| Best Odds | +102 BetOpenly | -104 Polymarket |
| BetOpenly | +102 | -104 |
| Kalshi | +100 | -104 |
| Polymarket | +100 | -104 |
Tomorrow
Atlanta Braves vs Philadelphia Phillies
Sun, Apr 26, 5:36 PM
| Bookmaker | Atlanta Braves | Philadelphia Phillies |
|---|---|---|
| Best Odds | -145 Polymarket | +138 Polymarket |
| Kalshi | -149 | +138 |
| Polymarket | -145 | +138 |
Baltimore Orioles vs Boston Red Sox
Sun, Apr 26, 5:36 PM
| Bookmaker | Baltimore Orioles | Boston Red Sox |
|---|---|---|
| Best Odds | -127 Polymarket | +122 Kalshi |
| Kalshi | -133 | +122 |
| Polymarket | -127 | +117 |
Toronto Blue Jays vs Cleveland Guardians
Sun, Apr 26, 5:38 PM
| Bookmaker | Toronto Blue Jays | Cleveland Guardians |
|---|---|---|
| Best Odds | -127 Polymarket | +122 Kalshi |
| Kalshi | -127 | +122 |
| Polymarket | -127 | +122 |
Cincinnati Reds vs Detroit Tigers
Sun, Apr 26, 5:41 PM
| Bookmaker | Cincinnati Reds | Detroit Tigers |
|---|---|---|
| Best Odds | -109 Kalshi | +108 Kalshi |
| Kalshi | -109 | +108 |
| Polymarket | -109 | +104 |
Tampa Bay Rays vs Minnesota Twins
Sun, Apr 26, 5:41 PM
| Bookmaker | Tampa Bay Rays | Minnesota Twins |
|---|---|---|
| Best Odds | -127 Kalshi | +127 Polymarket |
| Kalshi | -127 | +127 |
| Polymarket | -133 | +127 |
Chicago White Sox vs Washington Nationals
Sun, Apr 26, 6:11 PM
| Bookmaker | Chicago White Sox | Washington Nationals |
|---|---|---|
| Best Odds | -118 Polymarket | +113 Polymarket |
| Polymarket | -118 | +113 |
Houston Astros vs New York Yankees
Sun, Apr 26, 6:11 PM
| Bookmaker | Houston Astros | New York Yankees |
|---|---|---|
| Best Odds | +122 Polymarket | -133 Kalshi |
| Kalshi | +117 | -133 |
| Polymarket | +122 | -133 |
Milwaukee Brewers vs Pittsburgh Pirates
Sun, Apr 26, 6:11 PM
| Bookmaker | Milwaukee Brewers | Pittsburgh Pirates |
|---|---|---|
| Best Odds | -118 Kalshi | +113 Polymarket |
| Kalshi | -118 | +113 |
| Polymarket | -118 | +113 |
St. Louis Cardinals vs Seattle Mariners
Sun, Apr 26, 6:16 PM
| Bookmaker | St. Louis Cardinals | Seattle Mariners |
|---|---|---|
| Best Odds | +122 Kalshi | -122 Kalshi |
| Kalshi | +122 | -122 |
| Polymarket | +117 | -127 |
Texas Rangers vs Oakland Athletics
Sun, Apr 26, 6:36 PM
| Bookmaker | Texas Rangers | Oakland Athletics |
|---|---|---|
| Best Odds | -118 Kalshi | +113 Kalshi |
| Kalshi | -118 | +113 |
| Polymarket | -127 | +113 |
Arizona Diamondbacks vs San Diego Padres
Sun, Apr 26, 8:06 PM
| Bookmaker | Arizona Diamondbacks | San Diego Padres |
|---|---|---|
| Best Odds | +104 Polymarket | -109 Kalshi |
| Kalshi | +104 | -109 |
| Polymarket | +104 | -109 |
San Francisco Giants vs Miami Marlins
Sun, Apr 26, 8:06 PM
| Bookmaker | San Francisco Giants | Miami Marlins |
|---|---|---|
| Best Odds | -118 Polymarket | +122 Kalshi |
| Kalshi | -122 | +122 |
| Polymarket | -118 | +113 |
Los Angeles Dodgers vs Chicago Cubs
Sun, Apr 26, 8:11 PM
| Bookmaker | Los Angeles Dodgers | Chicago Cubs |
|---|---|---|
| Best Odds | -127 Kalshi | +127 Polymarket |
| Kalshi | -127 | +117 |
| Polymarket | -133 | +127 |
Kansas City Royals vs Los Angeles Angels
Sun, Apr 26, 11:21 PM
| Bookmaker | Kansas City Royals | Los Angeles Angels |
|---|---|---|
| Best Odds | -112 Kalshi | +113 Kalshi |
| Kalshi | -112 | +113 |
| Polymarket | -118 | +113 |
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MLB Preseason Odds Comparison in Montana
MLB Preseason odds in American format display positive numbers for underdogs and negative for favorites. A +150 line means a $100 bet wins $150, while -200 requires $200 to win $100. Montana bettors should focus on moneyline markets during spring training, as preseason games often feature experimental lineups and limited innings from starters, making run totals less predictable than regular season contests.
Key betting markets include moneylines, run totals (over/under), and first-five-inning wagers. Preseason baseball presents unique challenges as managers prioritize player evaluation over wins, creating line value for sharp bettors who track roster moves and pitching rotations. Montana's regulated market ensures competitive odds across licensed operators.
Line shopping becomes crucial during MLB Preseason betting Montana markets, as books often disagree on team strength assessment when rosters remain fluid. OddsGuard's comparison tool helps identify the best available number on each wager.
How do MLB Preseason odds differ from regular season lines?
Preseason odds carry higher variance due to experimental lineups, shorter pitcher outings, and teams prioritizing development over results. Books often post wider spreads and adjust totals more frequently as spring training progresses.
What should Montana bettors watch for in MLB Preseason markets?
Focus on starting pitcher announcements, as many games feature split-squad lineups or bullpen games. Weather delays are common in spring training venues, affecting totals and creating live betting opportunities throughout the slate.
- Run Line
- Baseball's version of the spread, almost always -1.5 / +1.5. The favorite at -1.5 must win by 2+ runs. Unlike football spreads, the run line rarely moves off 1.5.
- Over/Under (Game Total)
- A bet on combined runs scored by both teams. MLB totals typically range from 7 to 10.5, heavily influenced by starting pitchers, ballpark dimensions, and weather.
- First 5 Innings (F5)
- A moneyline, spread, or total that only covers the first five innings. Isolates starting pitcher matchups and removes bullpen variance.
- NRFI / YRFI
- No Run First Inning / Yes Run First Inning. A popular yes/no prop on whether either team scores in the top or bottom of the first inning.
- Listed Pitcher
- A bet condition where your wager is only valid if the listed starting pitcher actually starts. If a pitcher is scratched, the bet is voided.
- Innings Total
- Over/under on the total number of innings played, which can exceed 9 in extra-inning games.
- Moneyline
- A straight-up wager on which side wins. No point spread involved — you simply pick the winner.
- Vig (Juice)
- The bookmaker's commission built into every line. Standard vig is around -110 on each side, meaning you risk $110 to win $100.
- Implied Probability
- The likelihood of an outcome as suggested by the odds. For example, -200 implies a 66.7% chance. Comparing implied probability across bookmakers reveals where value exists.
- Closing Line Value (CLV)
- The difference between the odds you locked in and the odds at the time the market closes. Consistently beating the closing line is the strongest predictor of long-term betting profit.
- Line Movement
- Changes in odds between when a market opens and when it closes. Driven by sharp money, public betting patterns, injuries, and other news.
- Bankroll
- The total amount of money you've set aside specifically for betting. Effective bankroll management — typically risking 1-3% per wager — is essential for surviving variance.
- Unit
- A standardized bet size, typically 1% of your bankroll. Tracking results in units rather than dollars normalizes performance regardless of stake size.
- Hedge
- Placing a bet on the opposite side of an existing wager to lock in a guaranteed profit or reduce exposure, often used with futures or parlays.
- Parlay (Accumulator)
- A single bet combining two or more selections. All picks must win for the parlay to pay out. Higher potential return but significantly lower probability.
- Futures
- Long-term bets on outcomes determined at the end of a season or tournament, such as championship winners, MVP awards, or win totals.
- Live Betting (In-Play)
- Placing wagers while a game is in progress. Odds update continuously based on score, time remaining, and game flow.
- Overround
- The total implied probability across all outcomes in a market. An overround above 100% represents the bookmaker's margin. Lower overround means better value for bettors.
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