The best MLB betting promos available today unlock more than $4,000 in combined welcome bonuses for new users across the top-rated legal U.S. sportsbooks. Wednesday's 13-game slate is headlined by Phillies vs. Reds at 7:10 p.m. ET on ESPN and Blue Jays vs. Giants at 3:45 p.m. ET at Oracle Park — two of the most heavily bet games on the midweek calendar, and two of the best markets to use a new-user MLB betting promobefore first pitch.
Whether you're new to sports betting or just signing up at a new sportsbook, today's MLB betting promos give you a runway to bet tonight's slate. The BetMGM bonus code ACTION1550 and bet365 bonus code TOPACTION lead the list of available offers — and every promo below can be claimed in minutes before tonight's games begin.
Action Network's Ryan Minion has published his MLB picks, best bets, and predictions for Wednesday, July 8, with Blue Jays vs. Giants as his featured game. Read the full expert analysis before claiming your MLB betting promo and placing your first wager tonight.
What Are MLB Betting Promos?
MLB betting promos are welcome offers and bonuses that legal U.S. sportsbooks make available to new customers signing up for the first time. The most common types of MLB betting promotions available today are first-bet offers — where a losing opening wager is refunded in bonus bets up to a set amount — and guaranteed bonus bets, where you get credits simply for placing a qualifying wager regardless of the outcome. Some sportsbooks also offer deposit matches or multi-day bonus structures. Every MLB betting promo listed below is currently available to new users in eligible U.S. states.
Best MLB Betting Promos for Wednesday, July 8
| Sportsbook | Promo Code | MLB Betting Promo |
| BetMGM | ACTION1550 | $1,500 First Bet Offer + $50 Reward Points |
| bet365 | TOPACTION | Bet $10, Get $150 in Bonus Bets |
| DraftKings | Click Here | Bet $5, Get $200 Instantly in Bonus Bets |
| FanDuel | Click Here | Bet $5 Daily, Get Up To $1000 In Bet Resets |
| Fanatics Sportsbook | ACTION26 | $1,000 Bet Match |
BetMGM Bonus Code ACTION1550: Best MLB Betting Promo for High-Value New Users
The BetMGM bonus code ACTION1550 is the highest single-offer MLB betting promo available today, delivering $1,550 in total value: a $1,500 First Bet Offer plus $50 in BetMGM Reward Points. Deposit $10, place your first bet on any game from tonight's slate — Phillies vs. Reds, Blue Jays vs. Giants, Yankees vs. Rays, or any other matchup — and if that wager loses, BetMGM refunds your entire stake in bonus bets up to $1,500. The $50 in Reward Points posts to your account immediately upon registration, regardless of how your first bet settles.
If your first bet is $50 or more, BetMGM issues five bonus bet tokens each worth 20% of your original stake. If it's under $50, you receive one bonus bet token equal to your full stake. Bonus bets expire seven days after issuance and carry a 1x playthrough requirement. The BetMGM bonus code ACTION1550 is one of the most straightforward MLB betting promos available — deposit, bet, and collect.
bet365 Bonus Code TOPACTION: Best MLB Betting Promo for Guaranteed Value
The bet365 bonus code TOPACTION is the best MLB betting promo for new users who want bonus value locked in before a single pitch is thrown, regardless of outcome. Wager $10 on tonight's Phillies vs. Reds game or any other market on the Wednesday slate and get $150 in bonus bets the moment your opening wager settles, win or lose. No first-bet loss required, no minimum odds restriction, no deposit match percentage that shrinks in practice. It's the cleanest MLB betting promotion available right now, particularly for new bettors who want a high bonus-to-deposit ratio on their first wager.
DraftKings, FanDuel, and Fanatics: More MLB Betting Promos for Tonight
Round out your MLB betting promo haul with three additional new-user offers before tonight's first pitch. DraftKings offers $200 in guaranteed bonus bets, while FanDuel provides $1,000 in No Sweat Bets. Fanatics Sportsbook takes a different approach with a 10-day rolling structure: new users get FanCash equal to 10% of their initial deposit, up to $100 per day for 10 consecutive days, for a maximum of $1,000. That spread-out structure makes Fanatics Sportsbook one of the best MLB betting promos for bettors who want coverage across a full week of games rather than one opening wager.
Action Network's MLB Betting Picks for Wednesday, July 8: Ryan Minion's Best Bets
Before placing your first wager with any of today's MLB betting promos, read Action Network's Ryan Minion and his full MLB picks and predictions for Wednesday, July 8. Minion has identified Blue Jays vs. Giants at Oracle Park as his featured game for today's slate, with additional best bets across Wednesday's schedule. His model-driven approach factors in starting pitcher matchups, line movement, recent team form, and public betting percentages — the same signals that move sportsbook lines in the hours before first pitch.
Oracle Park in San Francisco is one of baseball's most pitcher-friendly venues, which makes the totals and first-five-innings markets on Blue Jays vs. Giants particularly interesting and shapes how Minion's model evaluates this game relative to the closing line. The full pick and reasoning are available at Action Network — use Minion's analysis to identify which MLB betting promo market to target with your first wager tonight.
Tonight's ESPN Wednesday Night Baseball: Phillies vs. Reds Preview
- When: 7:10 p.m. ET
- Where: Great American Ball Park, Cincinnati
- TV: ESPN
- Phillies ML: +120
- Reds ML: -142
- O/U: 9
Tonight's ESPN national game is one of the most compelling pitching storylines of the week. Chase Burns has been a dynamic ace for the Reds this season, earning him a selection to his first All-Star Game, and enters Wednesday's start against the Phillies ranked as a top-10 qualified pitcher with a 2.40 ERA and a 29.7% strikeout rate. Burns is one of the most dominant young arms in baseball right now, and tonight's start against a Phillies lineup built around power gives tonight's ESPN game a true ace-versus-offense dynamic that makes it one of the most heavily traded matchups on the entire Wednesday slate.
The Phillies counter with a power-heavy lineup that leads baseball in home runs. Kyle Schwarber leads the Majors with 31 home runs entering Wednesday's start, on pace to clear 40 homers for the fourth time in his career. Bryce Harper anchors the middle of the order with a .374 OBP and .520 slugging percentage. Action Network's model projections give the Reds a meaningful win probability edge heading into Wednesday's matchup, with Burns' All-Star form and home-field advantage accounting for Cincinnati's status as the -142 money line favorite despite entering the series with a losing record. Check Action Network's MLB game projections for the full model breakdown before placing your first wager.
Best Alternatives to MLB Betting Promos: Polymarket and Kalshi
Prefer to trade on tonight's games rather than bet against a sportsbook? Two of the best prediction market platforms have new-user offers live today that work as strong alternatives to traditional MLB betting promos — and both use the promo code ACTION.
| Platform | Promo Code | Offer | Available States |
| Polymarket | ACTION | $50 Bonus Trading Credits (deposit $20) | AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NJ, NY, NC, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC |
| Kalshi | ACTION | Trade $10, Get $15 Bonus | AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NJ, NY, NC, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC |
Polymarket Promo Code ACTION — $50 Bonus Trading Credits: New users who sign up with the Polymarket promo code ACTION and deposit $20 get $50 in bonus trading credits with no rollover requirement. Action Network's Nick Goodling covers the full offer details, including how to use the bonus on tonight's Phillies vs. Reds match-winner contract or on the World Cup quarterfinals beginning Thursday with France vs. Morocco. Unlike a sportsbook promo, Polymarket contract prices are set by real traders — not a house line — making it one of the most distinctive alternatives to a traditional MLB betting promo available right now.
Kalshi Promo Code ACTION — Trade $10, Get $15 Bonus: New users who sign up with the Kalshi promo code ACTION and place a $10 opening trade get a $15 bonus — applicable to MLB, WNBA, World Cup, or any other sport on the platform today. Action Network's Nick Sterling covers the full offer in his July 8 Kalshi breakdown. Critically, Kalshi is available in all 50 U.S. states, making it the most widely accessible prediction market alternative to traditional MLB betting promos for users in states where sportsbook wagering isn't yet legal.
Tonight's Full Wednesday MLB Schedule
| Matchup | Time (ET) | TV | Starting Pitchers |
| Blue Jays @ Giants | 3:45 p.m. | NBCSBA | Dylan Cease vs. Logan Webb |
| Cubs @ Orioles | 6:35 p.m. | MASN | Jared Jones vs. Grant Holmes |
| Yankees @ Rays | 6:40 p.m. | Amazon Prime | Gerrit Cole vs. Shane McClanahan |
| Mariners @ Marlins | 6:40 p.m. | MIAM | Tyler Phillips vs. George Kirby |
| Astros @ Nationals | 6:45 p.m. | NATS | Foster Griffin vs. Spencer Arrighetti |
| Royals @ Mets | 7:10 p.m. | SNY | Christian Scott vs. Steven Cruz |
| Phillies @ Reds | 7:10 p.m. | ESPN | TBD vs. Chase Burns |
| White Sox @ Red Sox | 7:40 p.m. | CHSN | Davis Martin vs. Jake Bennett |
| Guardians @ Twins | 7:40 p.m. | MNNT | Slade Cecconi vs. Connor Prielipp |
| Brewers @ Cardinals | 7:45 p.m. | CARD | Kyle Harrison vs. Michael McGreevy |
| Angels @ Rangers | 8:05 p.m. | RSN | MacKenzie Gore vs. Walbert Urena |
| Rockies @ Dodgers | 10:10 p.m. | SNLA | Gabriel Hughes vs. Roki Sasaki |
| D-backs @ Padres | 10:10 p.m. | ESPN | Jose Cabrera vs. Michael King |
MLB Betting Promos FAQ
What is the best MLB betting promo available today?
The BetMGM bonus code ACTION1550 offers the highest total value of any MLB betting promo today at $1,550 — a $1,500 First Bet Offer plus $50 in Reward Points. The bet365 bonus code ACTION offers the best guaranteed value with $150 in bonus bets for a $10 wager, regardless of whether it wins or loses.
Are MLB betting promos available in my state?
Most MLB betting promotions are available to new users in states where legal sports betting is active. BetMGM and bet365 are both live in more than 15 states. Check your sportsbook's terms and conditions at signup to confirm eligibility in your state.
Can I use more than one MLB betting promo?
Yes — each MLB betting promo above is offered by a different sportsbook, meaning you can sign up for multiple platforms and claim each welcome offer separately, provided you are a first-time customer at each sportsbook.
