Royals vs Giants Prediction, MLB Prop Bets and Parlay Picks for Tuesday, 5/20


Place your Bets on Royals vs Giants at BetUS Sportsbook!

- Make bank with our 2025 MLB Season picks! Join with our promo code HUDDLE125.
- Bet San Francisco (-145) in Royals vs Giants predictions
- Under 8 total runs (-120) is among our best bets
Royals vs Giants Prediction and Best Bets Today, May 20
My prediction
-
Moneyline Pick Giants (-145)
The Giants have won four of their last five at home and are 16–9 in MLB betting games where they score first. Hayden Birdsong’s 2.31 ERA gives San Francisco a sharp early-game edge. The Royals average just 3.31 runs per game, dead last in the AL. Despite KC’s solid bullpen, the Giants’ run differential and matchup advantage at home make them the best side to back at current MLB same game parlay odds.
-
Royals vs Giants Over/Under Pick: Under 8 (-120)
Kansas City’s pitching staff ranks second in ERA and fifth in WHIP, while the Giants’ staff has allowed the third-fewest home runs per game. The Royals struggle to hit for power, ranking dead last in home runs, and both starters have strikeout stuff. Five of KC’s last six games have ended with six runs or fewer. With elite bullpen depth on both sides, the Under is one of the sharper MLB news plays today.
Get More MLB Game Picks, Expert Analysis and Best Bets
- Phillies vs Rockies Prediction, MLB Prop Bets and Parlay Picks Tuesday, 5/20
- Diamondbacks vs Dodgers Prediction, MLB Prop Bets and Parlay Picks Tuesday, 5/20
My Best Prop Bets
-
Hayden Birdsong Over 4.5 Strikeouts (+129)
Big value to start with our MLB prop picks today. Birdsong has struck out 25 batters in just 23.1 innings, and now he faces a Royals lineup that walks the least and strikes out at the 2nd-lowest clip yet struggles against rising fastballs. With a projected five-inning workload and elite swing-and-miss metrics, 5+ Ks is a realistic outcome. It’s a playable anchor for your best MLB parlay picks today that should cash unless his pitch count gets capped early
Bet Hayden Birdsong Over 4.5 Strikeouts (+129)
-
Game prop pick: First team to score – Giants (-103)
The Giants rank 2nd in MLB in runners left in scoring position per game, which means they’re consistently putting pressure on early. SP Michael Lorenzen has allowed runs in the first two innings in three of his last five starts. Birdsong’s numbers against right-handed hitters are solid, and the Giants have the better on-base profile. With their strong 1-4 hitters, this makes sense as one of your more valuable MLB game picks tonight.
Bet Giants to Score First (-103)
Royals vs Giants Same Game Parlay Picks Today, May 20
Bet These Parlay Picks at BetUS Sportsbook
Royals vs Giants How to Watch
- Game: Royals vs Giants
- Date/Time: Tuesday, May 20, 2025 – 9:45 PM ET
- Location: Oracle Park – San Francisco, CA
- Royals vs Giants Live Stream: MLB.TV
Royals vs Giants MLB FAQs
Who is a good longshot prop for Royals vs Giants today?
Wilmer Flores to hit a HR and Giants to win at +825 offers substantial power value against Lorenzen.
Which team has the edge in bullpen ERA?
Kansas City ranks 2nd in team ERA, but the Giants’ bullpen has been quietly elite in May, especially at home.
Odds and information are accurate at the time of writing. Please check with official sources for the latest updates before placing any bets