Monday's MLB slate features an exciting lineup of games, including the Phillies vs. Mets at 7:10 p.m. ET. With plenty of action to choose from, today offers ample opportunities for bettors to dive into the matchups and take advantage of some of the best MLB betting promos available.
The six-game slate tonight presents a prime opportunity to explore various betting angles, such as moneyline bets, player props like total bases, strikeouts, and run totals. With a full day of action ahead, you can tailor your bets to the players and teams you think are primed to perform best.
Maximize your bankroll by taking advantage of the top MLB betting promos, including bet-and-get offers, first-bet offers, and deposit matches. These promos are designed to enhance your bankroll and give you more flexibility as you place bets on today's MLB odds. Whether you're backing the Phillies, Mets, or any other team on the slate, these offers provide the perfect opportunity to boost your chances of success.
Sign up today with the best MLB betting promos and start placing your bets. Be sure to check out our expert insights and picks for today's games to stay ahead of the curve and make the most of the action.
Here’s a rundown of the top MLB betting promos available today:
| Top MLB Sportsbooks | MLB Betting Promos | Sign-Up Link |
|---|---|---|
| bet365 | $150 Bet-and-Get or $1,000 First Bet Safety Net | TOPACTION |
| Fanatics Sportsbook | Up to $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 | Bet $1, Get $150 in Bonus Bets if You Win | ACTION4BG1 |
MLB Betting Promos, Predictions, and Starting Pitchers for April 21
Gear up for Monday's MLB slate with the bet365 bonus code TOPACTION. With exciting matchups like the Phillies vs. Mets at 7:10 p.m. ET, it’s the perfect time to focus on key games and take advantage of some of the best MLB betting promos available through bet365 Sportsbook.
Sign up today with the bet365 bonus code TOPACTION and place a $5 wager to unlock $150 in bonus bets, win or lose. If you want added protection, you can opt for the $1,000 First Bet Safety Net, which refunds your first wager in bonus bets if it doesn’t hit.
For Pennsylvania bettors, there’s an extra bonus. By signing up with the bet365 bonus code TOPACTION, you receive the $150 bet-and-get offer along with 50 spins for bet365 Casino—win or lose.
2. Fanatics Sportsbook
- Fanatics Sportsbook Promo: Click Here
- New Fanatics Sportsbook Bet-and-Get Promo: Bet $50, Get $250 in Bonus Bets
- Fanatics Sportsbook Bet-and-Get Promo: Bet $30, Get $300 in Bonus Bets
- Fanatics Sportsbook Sign-Up Bonus: $1,000 in No Sweat Bets
- Fanatics Sportsbook NY Sign-Up Bonus: 300% Profit Boost Token
- Fanatics Sportsbook States Available: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, WY
Score big with Monday’s MLB action, including the Phillies vs. Mets at 7:10 p.m. ET, with Fanatics Sportsbook, which is offering several MLB betting promos. Whether you're betting on today’s game or spreading bets out throughout the week, now is the perfect time to get in on all the action with some of the best MLB betting promos available.
Below are the four Fanatics Sportsbook promo offers that MLB bettors can claim today:
Bet and Get up to $1,000 in No Sweat Bets: Available in AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA, VT, WV, WY
Sign up with this offer and place a qualifying bet of up to $100 at -500 odds or longer. If your bet loses, you get up to $100 in bonus bets to cover the loss. This promotion gives you 10 separate opportunities to use $100 in No Sweat Bets.
Bet $30, Get $300 in Bonus Bets: Available in AZ, MI, NJ, PA
Place a $30 wager and get $300 in bonus bets, regardless of whether your bet wins or loses. Be sure to place a wager of at least $10 for the first three days to unlock the full bonus amount.
Bet $50, Get $250 in Bonus Bets: Available in CO, CT, IL, IN, LA, MA, MD, NC, OH, TN, VA, WV
Place $50 bets and receive $250 in bonus bets to use on your next wagers. The $250 bet-and-get offer requires you to place a $10 bet daily for five consecutive days, resulting in a $50 bonus bet each day.
Sign Up and Get a 300% Profit Boost Token: Exclusive to New York
New users in New York can claim a 300% Profit Boost Token upon signing up, giving you the chance to maximize your return on your first bet.
To claim any of these Fanatics Sportsbook promo offers, you need to place bets with odds of -500 or longer and make an initial deposit of at least $10. All bonuses are valid for seven days from the time they’re issued.
3. BetMGM
- BetMGM Bonus Code: ACTIONGET
- BetMGM Promo: Bet $10, Get $150 in Bonus Bets if You Win
- BetMGM Bonus Code: TOPTAN1600
- BetMGM Promo: 20% First Deposit Match, Up to $1,600 in Sports Bonus
- BetMGM Bonus Code: TOPACTION
- BetMGM Promo: $1,500 First Bet Offer
- BetMGM States Available: AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, WY
Whether you’re betting on the Phillies vs. Mets or other MLB matchups, these MLB betting promos from BetMGM are designed to maximize your potential returns.
Sign up with the BetMGM bonus code ACTIONGET and place a $10+ first bet on any MLB market. If your bet wins, you receive $150 in bonus bets. This offer is one of the best for new users in CO, MI, NJ, PA, and WV, making it a perfect opportunity to take advantage of today’s MLB slate.
For those looking to increase their bankroll, the BetMGM bonus code TOPTAN1600 offers a 20% deposit match, up to $1,600 in bonus funds. This offer is available in AZ, CO, DC, IN, IA, KS, KY, MA, MD, MI, NJ, NC, PA, TN, WV, and WY. Any deposit of $10 or more qualifies, but to unlock the full bonus, you need to deposit $8,000.
For larger wagers, the BetMGM first bet offer is ideal. Sign up with the BetMGM bonus code TOPACTION, and you can get up to $1,500 back in bonus bets if your first bet doesn’t win. This offer is available in AZ, CO, DC, IA, IL, IN, LA, KS, KY, MA, MD, MI, NC, NJ, OH, PA, TN, VA, WV, and WY. If your bet loses, you receive a refund in the form of five equal bonus bet tokens, giving you multiple chances to recover and win.
4. Caesars Sportsbook
- Caesars Sportsbook Promo Code: ACTION4BG1
- Caesars Sportsbook Welcome Offer: Bet $1, Get $150 in Bonus Bets if You Win
- Caesars Sportsbook Promo Code: ACTION4DYW
- Caesars Sportsbook Welcome Offer: Bet $1, Get 10 100% Profit Boost Tokens
- Caesars Sportsbook States Available: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, NC, NJ, NY, OH, ON, PA, TN, VA, WV, WY
Sign up today with the Caesars Sportsbook promo code ACTION4BG1 and place a $1 first bet to unlock $150 in bonus bets for today's MLB slate, including the Phillies vs. Mets at 7:10 p.m. ET. This offer is perfect for those looking to start their betting journey with a minimal investment, as it's one of the best MLB betting promos available for new users. To unlock the bonus bets, your first bet must be a winner.
If your first bet wins, Caesars Sportsbook credits your account with $150 in bonus bets, which you can use across any eligible market, including today's Phillies vs. Mets matchup.
For those looking to double their winnings on today's MLB games, Caesars Sportsbook offers an outstanding opportunity to double your profits. New users who sign up with the Caesars Sportsbook promo code ACTION4DYW can place a $1 first bet and instantly receive 10 Profit Boost Tokens—one of the highest upside MLB betting promos available.
Here’s how to claim and use your Profit Boost Tokens for today's slate:
- Register with Caesars Sportsbook promo code ACTION4DYW
- Place a $1 first bet on any MLB market
- Instantly receive 10 Profit Boost Tokens
- Use each token to place bets up to $25 to double your profit on any win
These Profit Boost Tokens are ideal for any MLB wager, including moneylines, run lines, or player props. Just remember that you must use all tokens within 14 days of activation.
Top Alternatives to MLB Betting Promos
With exciting matchups like the Phillies vs. Mets at 7:10 p.m. ET, today is a great time to dive into the action and boost your bankroll. While traditional sportsbooks offer great MLB betting promos, platforms like Sleeper Fantasy and Underdog Fantasy offer alternative ways to engage with today’s MLB games.
1. Sleeper Fantasy
- Sleeper Fantasy Promo Code: ACTION
- Sleeper Fantasy Sign-Up Offer: Get a 100% Deposit Match up to $100!
- States Available: AK, AR, CA, CO, FL, GA, KS, KY, MA, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VT, WI, WY, DC
Sleeper Fantasy has become one of the top daily fantasy sports (DFS) platforms. If traditional sports betting isn’t available in your state, Sleeper provides an excellent alternative. By signing up with the Sleeper Fantasy promo code ACTION, you get a 100% deposit match up to $100.
This is the perfect opportunity to build your MLB DFS lineup for today’s slate. Whether you're a seasoned DFS player or new to the space, Sleeper makes it easy to create lineups based on top players and key matchups.
2. Underdog (DFS)
- Underdog Promo Code: TOPACTION
- Underdog Sign-Up Offer: 50% Deposit Match, Up to $1,000 in Bonus Funds
- Underdog States Available: AL, AK, AZ, AR, CA, DC, DE, GA, IL, KS, KY, MA, MN, MO, NE, NM, NC, ND, OK, OR, RI, SC, SD, TN, TX, UT, VT, VA, WI, WV, WY
Underdog offers another excellent platform for daily fantasy sports fans. If you’re looking to build a winning lineup for today’s MLB games, Underdog makes it easy to select top players like those in the Phillies vs. Mets matchup.
By signing up using the Underdog promo code TOPACTION, you receive a 50% deposit match up to $1,000, giving you extra funds to maximize your chances in DFS contests. Whether you’re an experienced player or just getting started, Underdog is a great option to boost your bankroll while enjoying today's MLB action.
Take advantage of these great DFS options today and create your lineups now.
MLB Starting Pitchers & Predictions — Monday, April 21
New York Yankees vs. Cleveland Guardians
- Time/Location: 6:10 p.m. ET at Progressive Field (Cleveland, OH)
- Starting Pitchers: Clarke Schmidt (New York Yankees) vs. Gavin Williams (Cleveland Guardians)
- Prediction: Yankees ML -120
Both teams are coming off strong series wins over the weekend and are riding high with momentum, but Cleveland has the advantage of playing at home. The Guardians have been excellent at home, posting a 5-1 record, while the Yankees are 6-4 on the road.
New York has been the superior offensive team to start the season, and their pitching staff has been solid over the past five games. With the pitching matchup between Schmidt and Williams being fairly even, I’m leaning toward the Yankees, especially with their explosive lineup at a favorable price.
San Diego Padres vs. Detroit Tigers
- Time/Location: 6:40 p.m. ET at Comerica Park (Detroit, MI)
- Starting Pitchers: Randy Vasquez (San Diego Padres) vs. Keider Montero (Detroit Tigers)
- Prediction: Padres ML +120
The Padres have been one of the more consistent teams in baseball, and they’re sending out Vazquez, who has been outstanding so far. In 20.2 innings, Vazquez has allowed just 14 hits and four earned runs, despite walking 14 batters.
He’s faced a lot of traffic this season, but it hasn’t affected his performance much. Montero, on the other hand, hasn’t been impressive in his 17 career starts, with a 4.96 ERA and 1.35 WHIP. He also struggled in his first start of the season. It’s surprising to see the Padres as an underdog here, but I’m not questioning it. I’m taking the Padres.
Philadelphia Phillies vs. New York Mets
- Time/Location: 7:10 p.m. ET at Citi Field (Flushing, Queens, NY)
- Starting Pitchers: Aaron Nola (Philadelphia Phillies) vs. Tylor Megill (New York Mets)
- Prediction: Mets ML -125
These two teams are fighting for the top position in the NL East, making this series one to watch. The Mets have been dominant at home, going 9-1 so far this season, while the Phillies are 4-5 on the road.
New York boasts the best team ERA in the MLB and gives Tylor Megill the ball, who has given up his fair share of baserunners but has managed to limit the damage. Philadelphia will send Aaron Nola to the mound, but he’s struggled in two of his four starts, allowing at least five earned runs in both. I’m taking the Mets here.
Toronto Blue Jays vs. Houston Astros
- Time/Location: 8:e0 p.m. ET at Daikin Park (Houston, TX)
- Starting Pitchers: Kevin Gausman (Toronto Blue Jays) vs. Hunter Brown (Houston Astros)
- Prediction: F5 Under 4 -115
While there's plenty of pop in each of these lineups, they both have to round into form. Meanwhile, the opposing starters' strengths play right into the issues each lineup is having.
Look for both Hunter Brown and Kevin Gausman to have success early on in this one, and keep the scoring to a minimum the first few times through the order.
Take the first five under.