MLB Betting Promos: Odds & Schedule for Full Slate on Saturday, August 15

Looking for the best MLB betting promos for this Saturday’s primetime slate on FOX? Look no further as you can claim over $3,000 in bonus bets, with some of the best sportsbooks in the US.

With a nationally Televised triple-header featuring:

• The Boston Red Sox vs. Pittsburgh Pirates (7:15 p.m. ET at PNC Park)
• The Arizona Diamondbacks vs. Atlanta Braves (7:15 p.m. ET at Truist Park)
• The Milwaukee Brewers vs. Los Angeles Dodgers (7:15 p.m. ET at Dodger Stadium)

MLB fans and sports bettors can capitalize on Saturday's slate by unlocking one of the below MLB betting promos with a wide range of instant bet-and-get rewards, daily safety-net resets, first-bet matches, and zero-risk deposit credits. Something to suit every bettor.

What MLB Betting Promos can I Use on Saturday?

Saturday, August 15, 2026 MLB Odds for Televised Games

Game 1: Boston Red Sox vs. Pittsburgh Pirates (7:15 p.m. ET | FOX | PNC Park)

• Moneyline: Red Sox -120 | Pirates +100
• Run Line: Red Sox -1.5 (+140) | Pirates +1.5 (-165)
• Run Total: Over 8 Runs (-110) | Under 8 Runs (-110)

Game 2: Arizona Diamondbacks vs. Atlanta Braves (7:15 p.m. ET | FOX | Truist Park)

• Moneyline: Diamondbacks (+170) | Braves (-210)
• Run Line: Diamondbacks +1.5 (-175) | Braves -1.5 (+145)
• Run Total: Over 9 Runs (-115) | Under 9 Runs (-105)

Game 3: Milwaukee Brewers vs. Los Angeles Dodgers (7:15 p.m. ET | FOX | Dodger Stadium)

• Moneyline: Brewers (-140) | Dodgers (+120)
• Run Line: Brewers -1.5 (+120) | Dodgers +1.5 (-145)
• Run Total: Over 7.5 Runs (-105) | Under 7.5 Runs (-115)

Disclaimer: Lines, odds, and prices are dynamic and subject to change prior to first pitch.

What Are the Best MLB Sportsbook Promos?

Whether you want to lock in guaranteed bonus bets off a low-risk $5 qualifying wager or secure first-bet insurance on a long-shot underdog, top sportsbooks provide flexible promos and bonuses tailored to MLB fans.

Welcome bonuses kickstart any innings perfectly, with bonus bet tokens, profit boost tokens, or second-chance site credits to maximize bankroll flexibility across Saturday's national FOX broadcast slate.

Best MLB Betting Promos for Saturday, August 15, 2026

Fanatics Sportsbook Promo Code

Fanatics Sportsbook provides up to $1,000 in FanCash with its daily safety-net bet promo. By opting in daily, your first cash wager of $1 or more (minimum odds -200) is matched dollar-for-dollar up to $100 per day over 10 consecutive days.

This extended 10-day timeline is tailor-made for baseball bettors during the August postseason setup. Rather than risking your bankroll on a single game, MLB fans can place their wagers across full series, targeting starting pitching matchups, pitcher strikeout props, and live inning totals, safe knowing their stake will come back should their wager lose.

Over 10 days, bettors can build a $1,000 FanCash reserve that can be converted directly into bonus site credit or used to purchase official team gear in the Fanatics store.

• Fanatics Sportsbook Promo Code: ACTION26
• Welcome Offer: Get Up to $1,000 Matched in FanCash ($100/day over 10 days)
• Minimum Wager: $1+ daily cash bet (Min odds -200)
• Eligible States: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY
• Terms: Opt-in required daily; bonus fan cash issued within 72 hours and expires in 7 days.

BetMGM Bonus Code

BetMGM offers another safety-net bet promo, this one with $1,500 in bonus bets if your initial opening wager does not win. If your first cash bet settles as a loss, BetMGM refunds your stake in five equal 20% bonus bet increments (for wagers over $50) or a single bonus token (for wagers under $50).

Major League Baseball's daily schedule always features upsets. Nothing from bullpen fatigue, late-inning wild pitches, and unpredictable relievers can disrupt even pre-game wagers on the short-priced favorites.

BetMGM’s safety-net structure protects bettors taking aggressive shots on underdog moneylines. Splitting losing refunds into five distinct bonus tokens allows users to distribute their credit across upcoming series, division race futures, or World Series market contracts.

• BetMGM Bonus Code: TOPACTION
• Welcome Offer: Up to $1,500 First Bet Offer in Bonus Bets
• Minimum Deposit: $10
• Payout Mechanics: Refunds issued as five 20% bonus tokens on losing wagers over $50
• Eligible States: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, NY, OH, PA, TN, VA, WV, WY

bet365 Bonus Code

The bet365 welcome structure requires just $10 qualifying wagers to unlock $150 in guaranteed bonus bets, regardless of whether your opening pick wins or loses. Bonus bets post quickly upon wager settlement and can be split freely across any sports markets.

Guaranteed bet-and-get promotions offer the perfect opportunity for new MLB bettors looking to explore low-risk entries. Unlocking $150 in guaranteed site credit from a simple $10 bet on Saturday's FOX national broadcast gives bettors immediate capital to deploy across live in-game betting markets, Same Game Parlays, and late West Coast game totals.

• bet365 Bonus Code:TOPACTION
• Welcome Offer: Bet $10, Get $150 in Bonus Bets Win or Lose
• Minimum Deposit: $10
• Wagering Requirement: 1x playthrough on settled bonus bets
• Eligible States: AZ, CO, IA, IN, KY, LA, MA, MD, MI, NC, NJ, OH, PA, TN, VA

DraftKings Sportsbook Promo Code

DraftKings Sportsbook features an instant bet-and-get mechanism that automatically activates via any of the links on this page. A $5 real-money wager on any Saturday MLB slate unlocks $150 in total bonus bets, distributed over a 14-day promotional window.

Unlike lump-sum promotions that deliver all site credits on day one, DraftKings structures this $150 welcome offer into three separate $50 installments delivered every 7 days via a click-to-claim feature over 14 days. This is well suited to the MLB. Instead of using all your bonuses on a single slate, baseball fans can deploy their initial $50 bonus bet allocation across Saturday's featured national FOX matchups, $150 across two weeks, with $50 bonuses each week to try your hand.

• DraftKings Sportsbook Promo Code: Auto-Applied via Link
• Welcome Offer: Bet $5, Get $150 in Instant Bonus Bets
• Bonus Format: Issued as $50 in bonus bets every 7 days via click-to-claim for 14 days (Max $150 total)
• Token Expiry: Bonus tokens expire 7 days (168 hours) after issuance
• Eligible States: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY

FanDuel Sportsbook Promo Code

FanDuel Sportsbook’s sign-up promotion delivers a multi-day safety net structured as daily bet resets. Bettors can receive up to $1,000 in cumulative bet resets ($200 daily max refund across 5 days) if their initial daily wagers settle as losses.

A multi-day reset offer fits within the 162-game Major League Baseball season. With a $200 daily safety net active across five consecutive slates, bettors can comfortably target longshot single-game sides, run lines, or player prop parlays throughout full weekend series without risking their entire starting bankroll on one game.

• FanDuel Promo Code: Auto-Applied via Link
• Welcome Offer: Bet $5 Daily, Get Up to $1,000 in Bet Resets ($200/day max refund over 5 days)
• Minimum Deposit / Bet: $10 Deposit / $5 Qualifying Wager
• Bonus Refund Structure: Non-withdrawable site credits with 1x playthrough requirement
• Eligible States: AZ, CO, CT, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY

Hard Rock Bet Promo Code

Hard Rock Bet presents a win-contingent bet-and-get promotion. Placing a $5 opening cash wager on any Saturday baseball market unlocks $150 in bonus bets—issued as six $25 tokens—if your qualifying bet wins.

Win-contingent offers reward sharp handicapping. Targeting strong home favorites or heavily favored team totals on Saturday's slate gives bettors the best chance of turning a winning $5 wager into an expanded $150 bonus bankroll. With this, you get not only the bonuses, but the winnings as well, giving you a healthy balance to take in Sunday’s MLB action.

• Hard Rock Bet Promo Code: Auto-Applied via Link
• Welcome Offer: Bet $5, Get $150 in Bonus Bets If Your Bet Wins
• Bonus Distribution: Issued as six (6) $25 bonus bet tokens upon winning settlement
• Minimum Deposit: $10
• Eligible States: MI, NJ

theScore Bet Promo Code

Available in select gaming jurisdictions, theScore Bet delivers a $1,000 First Bet Reset. If your opening real-money bet loses. Simply put, place a wager up to $ 1,000; if you lose, theScore Bet will return this whole stake to you as bonus bets.

• theScore Bet Promo Code: ACTNEWS
• Welcome Offer: $1,000 First Bet Reset
• Minimum Deposit: $10
• Eligible States: AZ, CO, IA, IL, IN, KS, KY, LA, MA, MD, MO, NC, OH, TN, VA

MLB Prediction Market Promos

Prediction markets regulated by the Commodity Futures Trading Commission (CFTC) offer sports traders a legal, transparent alternative to traditional sportsbooks.

Kalshi Promo Code

Kalshi is a CFTC-regulated event contract exchange that allows users to trade binary outcome markets rather than betting against a traditional sportsbook house edge. Trading $25 in contract volume unlocks a randomized promotional credit ranging from $15 up to $500 ($15 at 70%, $35 at 24%, $75 at 5%, $100 at 0.65%, and $500 at 0.35%).

Because baseball games involve rapid pitching changes and late-inning bullpen volatility, receiving up to $500 in bonuses allows traders to actively hedge quarter-by-quarter outcome probabilities, capture rapid price shifts, or execute arbitrages against fixed-odds lines without paying house juice.

• Kalshi Promo Code: ACTION
• Welcome Offer: Trade $25, Receive a Randomized Credit Up to $500 ($15 guaranteed minimum)
• Qualifying Threshold: $25 in cumulative settled trade volume within 30 days
• Regulatory Body: Commodity Futures Trading Commission (CFTC)
• Eligible States: Available in 41 States + DC (Excludes AZ, IL, MA, MD, MI, MT, NV, OH, WA)

Polymarket Promo Code

Entering promo code ACTION and completing a $10 deposit automatically grants an instant $20 trading bonus credit with zero qualifying trade requirement.

An instant $20 trading credit provides zero-risk liquidity for prediction market participants. Polymarket’s peer-to-peer exchange model gives MLB traders a way to adapt quickly to real-time price shifts during key possession changes, and establish multi-contract positions across Saturday's entire broadcast slate starting with just a $10 deposit, offering $20 in bonuses to play with.

• Polymarket Promo Code: ACTION
• Welcome Offer: Deposit $10, Get $20 Instant Trading Bonus (No Trade Required)
• Minimum Deposit: $10 via ACH, Debit Card, or Apple Pay
• Credit Rules: Non-withdrawable trading credits with a 1x playthrough requirement on net profits
• Eligible States: Available nationwide excluding AZ, IL, MA, MD, MI, MT, NJ, NV, and OH

What other MLB Games are on this Saturday?