MLB is back in action and you can get started today with the best MLB betting promos for Opening Day. These Opening Day MLB betting promos from the top online sportsbooks in the U.S. provide new sign-ups with thousands in bonus bets just for creating a new MLB sports betting account today.
Sign up now using these top MLB betting promos and place bets on MLB Opening Day odds today. Check out our MLB predictions and best bets for each game to make wager on all of the Opening Day games.
Take a look at the best MLB betting promos for Opening Day in the chart below and place your first bet today. Continue reading for more of our MLB Opening Day picks and probable pitchers for today's MLB games.
| Top MLB Sportsbooks | MLB Betting Promos for Opening Day | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get or $1,000 First Bet Safety Net | TOPACTION |
| Fanatics Sportsbook | $300 Bet-and-Get Promo or $1,000 in No Sweat Bets | Click Here |
| BetMGM | Bet $10, Get $150 in Bonus Bets if You Win | ACTIONGET |
| Caesars Sportsbook | Get 10 100% Profit Boost Tokens | ACTION4DYW |
Best MLB Opening Day Betting Promos, Predictions, and Probable Pitchers
With 28 out of 30 MLB teams in action on Opening Day — Thursday, March 27, 2025 — there is a lot to unpack. Let's discuss each game and how to use the best MLB betting promos to wager on our predictions now.
These are the top MLB betting promos to claim for the Opening Day games today:
- bet365 bonus code TOPACTION: $150 Bet-And-Get or $1,000 First Bet Safety Net
- Fanatics Sportsbook promo: Click hereto claim a $300 Bet-And-Get or $1,000 in No Sweat Bets
- BetMGM bonus code ACTIONGET: Bet $5, Get $150 in Bonus Bets, If You Win
- Caesars Sportsbook promo code ACTION4DYW: Bet $1, Get 10 100% Profit Boost Tokens
Brewers vs. Yankees Prediction, 3:05 p.m ET
Probable Pitchers: Freddy Peralta vs. Carlos Rodon
The Milwaukee Brewers and New York Yankees face off at 3:05 p.m. ET in a star-studded matchup between the NL Central division winner and the AL Pennant winner. When you sign up in New York to bet on Brewers vs. Yankees at Fanatics Sportsbook, claim the Fanatics Sportsbook promo for a 300% Profit Boost Token.
Orioles vs. Blue Jays Prediction, 3:07 p.m. ET
Probable Pitchers: Zach Eflin vs. Jose Berrios
The Baltimore Orioles and Toronto Blue Jays square off in an AL East divisional matchup. Sign up now with the bet365 bonus code TOPACTION to secure a $1,000 First Bet Safety Net offer to bet Orioles vs. Blue Jays at 3:07 p.m. ET.
Suppose I place a $500 first bet on the Orioles moneyline (-110). If the Orioles win, I receive $454.54 in profit and my $500 initial stake is credited back to my account. If the Orioles lose, I receive $500 in bonus bets that expire seven days after hitting my account.
Red Sox vs. Rangers Prediction, 4:05 p.m. ET
Probable Pitchers: Garrett Crochet vs. Nathan Eovaldi
The Boston Red Sox and Texas Rangers figure to be two of the true contenders for the American League crown this season and they face off on Opening Day. To bet on Red Sox vs. Rangers at 4:05 p.m. ET, sign up with the BetMGM bonus code ACTIONGET to receive a $150 bet-and-get bonus.
For example, let's say I place a $5 first bet on the Rangers moneyline (+100). If the Rangers win, I receive $5 in profit, my $5 stake back, and $150 in bonus bets. If the Rangers lose, I receive nothing.
Phillies vs. Nationals Prediction, 4:05 p.m. ET
Probable Pitchers: Zack Wheeler vs. MacKenzie Gore
The Philadelphia Phillies and Washington Nationals are set to battle in an NL East divisional matchup on Opening Day. Register for a new account in Pennsylvania with the bet365 bonus code TOPACTION to secure a $150 bet-and-get bonus and 50 spins at bet365 Casino.
Suppose I place a $5 first bet on the Phillies -1.5 (+100) in Phillies vs. Nationals at 4:05 p.m. ET. If the bet wins, I receive $5 in profit, my $5 stake back, $150 in bonus bets, and 50 casino spins. If the bet loses, I still receive $150 in bonus bets and 50 casino spins.
This is one of the only state-exclusive MLB betting promos available for MLB Opening Day as it is only offered to new users in PA.
Braves vs. Padres Prediction, 4:10 p.m. ET
Probable Pitchers: Chris Sale vs. Michael King
The Atlanta Braves and San Diego Padres figure to be near the top of the National League pennant race this season and the two teams face off at 4:10 p.m. ET.
Sign up with the Caesars Sportsbook promo code ACTION4DYW and place a $1+ bet on Braves vs. Padres to receive 10 100% Profit Boost Tokens.
Pirates vs. Marlins Prediction, 4:10 p.m. ET
Probable Pitchers: Paul Skenes vs. Sandy Alcantara
While the Pittsburgh Pirates and Miami Marlins figure to be two of MLB's worst teams this season, this game is a must-watch with NL Cy Young frontrunner Paul Skenes and former Cy Young winner Sandy Alcantara battling it out.
Sign up and bet on Pirates vs. Marlins with the Fanatics Sportsbook promo that yields 10 days of No Sweat Bets. Opt-in and place daily wagers to get up to $1,000 in No Sweat Bets across the 10-day period. This is one of the most nuanced MLB betting promos for Opening Day, but still holds tons of value.
Giants vs. Reds Prediction, 4:10 p.m. ET
Probable Pitchers: Logan Webb vs. Hunter Greene
Register with the bet365 bonus code TOPACTION to secure a $150 bet-and-get offer to bet Giants vs. Reds now. Place a $5+ first bet and get $150 in bonus bets, win or lose.
This is one of the most intriguing games to wager on with the best MLB betting promos for Opening Day as the San Francisco Giants and Cincinnati Reds are seemingly on an upward trend in 2025.
Guardians vs. Royals Prediction, 4:10 p.m. ET
Probable Pitchers: Tanner Bibee vs. Cole Ragans
The Cleveland Guardians are the reigning AL Central champion, but the Kansas City Royals have improved their roster to put themselves in prime position to steal the crown this season.
Claim the Fanatics Sportsbook promo to bet Guardians vs. Royals at 4:10 p.m. ET. Receive three separate days of $100 bet-and-get offers. Place a $10 qualifying wager on the game to receive $100 in bonus bets, win or lose.
Angels vs. White Sox Prediction, 4:10 p.m. ET
Probable Pitchers: Yusei Kikuchi vs. Sean Burke
The Los Angeles Angels and Chicago White Sox are two of the lowliest franchises in MLB, but there are still bright spots for each team as they rebuild.
If online sports betting is not legal in your state, Kalshi represents an excellent alternative option. Sign up with the Kalshi promo code ACTION to get a $10 bonus once you complete $100 in total trades, including any of those you make on Angels vs. White Sox.
Mets vs. Astros Prediction, 4:10 p.m. ET
Probable Pitchers: Clay Holmes vs. Framber Valdez
The New York Mets landed Juan Soto this offseason and the Houston Astros have made a plethora of moves themselves to stay relevant in the AL playoff picture.
Register with the BetMGM bonus code TOPACTION to get back up to $1,500 in bonus bets if your first bet on Mets vs. Astros results in a loss.
Twins vs. Cardinals Prediction, 4:15 p.m. ET
Probable Pitchers: Pablo Lopez vs. Sonny Gray
The Minnesota Twins and St. Louis Cardinals are two teams heading in the opposite direction, but this Opening Day pitching matchup figures to be competitive. Sign up with the bet365 bonus code TOPACTION in Tennessee to receive a bet $5, get $150 in bonus bets offer to bet Twins vs. Cardinals at 4:15 p.m. ET.
Tigers vs. Dodgers Prediction, 7:10 p.m. ET
Probable Pitchers: Tarik Skubal vs. Blake Snell
The Detroit Tigers are looking to make more noise this season after a surprising run to the playoffs last season, but the juggernaut Los Angeles Dodgers stand in their way on Opening Day.
Create a new DFS account with the Underdog promo code TOPACTION for a 50% deposit match of up to $1,000 in bonus cash. Place entries containing players from Tigers vs. Dodgers, including Shohei Ohtani, Mookie Betts, and Riley Greene.
If you are in a state where you cannot claim the best MLB betting promos for Opening Day like California, this offer presents an outstanding alternative.
Cubs vs. Diamondbacks Prediction, 10:10 p.m. ET
Probable Pitchers: Justin Steele vs. Zac Gallen
The Chicago Cubs have technically had their Opening Day in Japan, but their season continues against the Arizona Diamondbacks at 10:10 p.m. ET. bet365 recently launched in Illinois and you can use the bet365 bonus code TOPACTION in IL for the $150 bet-and-get offer to wager on Cubs vs. Diamondbacks.
Athletics vs. Mariners Prediction, 10:10 p.m. ET
Probable Pitchers: Luis Severino vs. Logan Gilbert
The AL West division is seemingly up for grabs and the Oakland Athletics and Seattle Mariners could both be in the mix. The BetMGM bonus code TOPTAN1600 yields a 20% deposit match of up to $1,600 in sports bonus. You can use your bonus to wager on Athletics vs. Mariners or any other Opening Day game.
Register now and claim any of the best MLB betting promos for Opening Day today to wager on our MLB predictions ad best bets for any of these games.