Royals vs Giants Prediction, Picks & Odds for Today’s MLB Game

With the Kansas City Royals playing to the Under frequently as of late, expect this matchup against the San Francisco Giants to play out the same way.

Neil Parker - Analyst at Covers.com
Neil Parker • Betting Analyst
May 20, 2025 • 12:45 ET • 4 min read

MLB

Match starts: 5 hrs
SF
64 %
KC
36 %
Read Analysis
Hayden Birdsong San Francisco Giants MLB
Photo By - Imagn Images. San Francisco Giants starting pitcher Hayden Birdsong (60) looks over his shoulder after releasing the final pitch.

The Kansas City Royals upset the San Francisco Giants in their series opener at Oracle Park last night, and the two teams hit the field for Game 2 on Tuesday, May 20.

Kansas City has righty Michael Lorenzen toeing the rubber, and San Francisco is countering with righty Hayden Birdsong.

My top MLB picks and Royals vs. Giants predictions are calling for another low-scoring result in the Bay Area tonight.

Royals vs Giants prediction

My Royals vs Giants best bet: Under 8.0 (-110 at William Hill)

San Francisco Giants right-hander Hayden Birdsong will make his first start of the season Tuesday after spinning a 2.31 ERA, 1.29 WHIP and 4.30 xFIP across 21 1/3 innings out of relief to start the campaign. 

The 23-year-old righty has topped out with 65 pitches across three innings through his 11 appearances this season, and he sports a career 4.75 ERA, 1.39 WHIP and 4.21 xFIP over his 16 career starts the past two seasons.

I anticipate a smooth starting debut and Birdsong to be on a pitch count tonight.

The Kansas City Royals rank 26th in wOBA and 24th in ISO against righties, and they’ve averaged a miniscule 3.31 runs per game, after all.

Royals starter Michael Lorenzen has also pitched well this season with a 3.76, 1.23 and 4.17 line, and he’s allowed three runs or fewer in six of nine starts.

The Giants are a middling offense against righties with a 15th-ranked wOBA and 16-ranked ISO.

Additionally, while the wind is forecasted to be blowing out at a healthy clip to right field at Oracle Park tonight, it’s built into this total. And, the Royals have played to the Under in 29 of their past 41 games (+16.95 Units / 37% ROI).

Royals vs Giants same-game parlay (SGP)

Under 8.5

Bobby Witt Jr. 2+ hits, runs, and RBI

Mike Yastrzemski 2+ hits, runs, and RBI

Royals star Witt has been a force against right-handed arms with a .411 wOBA, .261 ISO and .978 OPS dating back to last season, and he enters Sunday’s game ripe for a breakout game. The go-to shortstop is mired in a 4-for-23 stretch at the dish with just a single run and no RBI despite three of his four hits going for extra bases.

San Fran leadoff man Mike Yastrzemski is also off to a solid start against righties with a .375, .170 and .854 line, and he’s also in a bit of a mini funk with a 2-for-12 stretch through his past five games.

Of course, we’re also landing a nice multiplier for this same-game parlay because the two Overs are uncorrelated legs with the game total Under.

Royals vs Giants odds

Royals vs Giants live odds

Royals vs Giants opening odds

  • Moneyline: Kansas City +125 | San Francisco -150
  • Run line: Kansas City +1.5 (-170) | San Francisco -1.5 (+145)
  • Over/Under: Over 8 (-105) | Under 8 (-115)

Royals vs Giants trend

The Kansas City Royals have hit the Under in 29 of their last 41 games (+16.95 Units / 37% ROI). Find more MLB betting trends for Royals vs. Giants.

How to watch Royals vs Giants and game info

Location Oracle Park, San Francisco, cA
Date Tuesday, 5-20-2025
First pitch 9:45 p.m. ET
TV FDSNKC, NBCSBA
Royals starting pitcher Michael Lorenzen
(3-4, 3.76 ERA)
Giants starting pitcher Hayden Birdsong
(1-0, 2.31 ERA)

Royals vs Giants latest injuries

Royals vs Giants weather

Not intended for use in MA.
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Neil Parker - Covers
Betting Analyst

Neil Parker is, first and foremost, a sports fan. A huge supporter of the Cowboys, Cubs, and Maple Leafs, he has managed to parlay his passion into writing gigs with Sportsbook Review, USA TODAY, theScore, DraftKings Playbook, and RotoWire, among many others. He also co-hosted the Daily Fantasy Edge podcast and can now be seen offering expert golf and hockey advice on Covers’ Before you Bet broadcast.

Neil takes a numbers-based approach to his handicapping and complements his in-depth statistical analysis with a keen eye on the markets to provide the best available odds. He loves to lean on his rolodex of idioms to offset his inner nerd. When it comes to wagering, he throws down on anything that catches his eye at bet365, Betway and BetVictor. He also keeps a close eye on CoolBet because the polar bear brand often has outlier NHL and NFL moneyline prices.

Neil graduated with honors from St. Thomas University in 2007 before completing his BEd at Acadia University in 2010. After teaching a myriad of courses and subjects, he found a groove delivering fun lessons to exceptional learners in non-traditional classroom environments. If his decade-plus teaching run taught him anything about sports betting, it’s to stay the course and use the summer – or offseason – to refresh and prepare to be better in the year to come.

Neil’s top pieces of advice for recreational bettors are to stay within your means and to remember sportsbooks aren’t bank accounts. Don’t be afraid to pull those winnings and treat yourself to a lifetime experience courtesy of a big win.

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