Seven Major League Baseball games on Thursday's slate. Here are the best parlay combinations with value odds across today's card.
Thursday Major League Baseball Parlay Picks - May 21, 2026
Seven games light up Thursday's Major League Baseball slate, and there's plenty of value hiding in today's lines. From the early afternoon matchups in the Midwest to the late-night West Coast action, we've identified the best parlay combinations to target. Let's break down the card and build some winning tickets.
Game-by-Game Breakdown
Cleveland Guardians @ Detroit Tigers (2:11 PM ET)
The Tigers come in as modest home favorites at -115 on the moneyline with Hard Rock Bet, and the total is set at a tight 7. Detroit has shown resilience at home and this feels like a low-scoring grind. The Under 7 at +104 with DraftKings is genuinely generous - getting plus-money on the under in a pitching-heavy matchup is a value flag. When the total is set this low, books typically shade the under to negative odds, so +104 stands out immediately.
Pittsburgh Pirates @ St. Louis Cardinals (2:16 PM ET)
Pittsburgh comes in as slight road favorites at -118 (betPARX), which tells you something about how the market views this Cardinals club right now. The Pirates -1.5 spread at +145 with betPARX represents genuine value if Pittsburgh is your lean - that's a strong payout for a team already favored on the moneyline. The total sits at 7.5 and the Under 7.5 at +100 with theScore Bet is another plus-money under worth noting.
New York Mets @ Washington Nationals (5:06 PM ET)
The Mets are road favorites here at -112 (FanDuel), and Washington's +100 moneyline at theScore Bet makes the Nationals an interesting live underdog. The total is set at 8.5 - higher than most Thursday games - reflecting two offenses that can generate runs. The Mets -1.5 spread at +146 with FanDuel is exceptional value if New York is running hot. Getting +146 on a favored team's run-line is rare and screams value.
Atlanta Braves @ Miami Marlins (7:41 PM ET)
Atlanta is a solid road favorite at -135 (FanDuel) while Miami checks in at +125 (BetMGM). The Marlins have struggled for most of this season, and the Braves have the lineup depth to win convincingly. The Under 7.5 at -104 with Bally Bet is near even-money and represents solid value in what could be a pitcher's duel.
Toronto Blue Jays @ New York Yankees (8:06 PM ET)
The Yankees are heavy favorites at -167 (Bally Bet) at home against Toronto, but that price is tough to build into a parlay. The Yankees -1.5 spread at +135 with Fanatics is the smarter play - you get a hefty payout while the Yankees cover with a multi-run win. The Under 8 at -103 with Bally Bet is also near even-money and worth consideration.
Athletics @ Los Angeles Angels (10:39 PM ET)
Fascinating line here - both teams are essentially even on the moneyline with Athletics at -104 (FanDuel) and the Angels at -110 (BetMGM). The total sits at 8.5 and the Over 8.5 at +100 with theScore Bet is plus-money on a game between two offenses that can put up numbers in the bandbox environment.
Colorado Rockies @ Arizona Diamondbacks (10:41 PM ET)
Arizona is a heavy favorite at -189 (theScore Bet) but the Diamondbacks -1.5 spread at just +105 (Fanatics) is where the value lives. The Rockies are perpetually one of baseball's worst teams and Coors Field effects don't apply on the road. The total of 9 reflects a potential run-fest, with the Under 9 at +100 with BetMGM offering plus-money on the under.
Thursday MLB Parlay Recommendations
Parlay 1 - The Value Unders Special (3 Legs)
This parlay stacks three plus-money or near-even unders across the early and mid-slate games, targeting low-scoring environments:
- Cleveland Guardians @ Detroit Tigers - Under 7 (+104) - DraftKings - Plus-money on the under at the lowest total of the day is a clear value flag.
- Pittsburgh Pirates @ St. Louis Cardinals - Under 7.5 (+100) - theScore Bet - Another plus-money under in a matchup between two teams that don't overwhelm offensively.
- Atlanta Braves @ Miami Marlins - Under 7.5 (-104) - Bally Bet - Near even-money under in a game where Miami's offense has been limited all season.
Combined Parlay Odds: approximately +320
Three plus-money or near-even legs stacked together creates real value. The books are essentially handing you plus-money on each under individually - at parlay prices, that compounds nicely.
Parlay 2 - Spread Value Parlay (3 Legs)
This parlay targets teams covering the run-line spread at generous prices, leaning on stronger clubs to win decisively:
- New York Mets -1.5 (+146) - FanDuel - Getting +146 on a favored team's spread is outstanding value. The Mets have one of the deeper lineups in the National League.
- New York Yankees -1.5 (+135) - Fanatics - The Yankees at home against Toronto with +135 on the spread? Yes please. That's a powerful combination of home-field advantage and lineup quality.
- Arizona Diamondbacks -1.5 (+105) - Fanatics - Arizona against the Rockies away from Coors Field is a near-lock situation at virtually even spread odds.
Combined Parlay Odds: approximately +698
Three positive-odds spread legs combine for a massive potential payout. Each leg individually offers value above market expectations - stacking them creates a high-ceiling ticket.
Parlay 2 - Best Value 2-Leg Same-Day Parlay
For bettors who prefer a safer two-leg ticket with strong value:
- Cleveland Guardians @ Detroit Tigers - Under 7 (+104) - DraftKings - The marquee value play of the day.
- New York Yankees -1.5 (+135) - Fanatics - Yankees covering at home with plus-money odds.
Combined Parlay Odds: approximately +338
Two strong individual value plays combining for +338 odds. This is the sharp, disciplined ticket for Thursday's slate.
Thursday's Best Standalone Value Bet
The single biggest value flag on today's board is the New York Mets -1.5 at +146 with FanDuel. It is extraordinarily rare to see a run-line spread on the favored team paying nearly +150. The implied probability on that price is just 40.7%, meaning the market is essentially saying there's less than a 41% chance the Mets win by two or more runs - that feels low for a team favored on the moneyline. This is a standalone bet worth considering on its own merits.
Responsible gambling reminder: Always bet within your means and treat sports betting as entertainment - never chase losses or bet more than you can afford to lose.
