Giants vs Royals Prediction, Odds & Player Prop Bets Today – MLB, Sep 21

Kansas City Royals' Bobby Witt Jr. during a baseball game against the Colorado Rockies in Kansas City, Mo., Saturday, June 3, 2023.
(AP Photo/Colin E. Braley)
  • The Royals are -150 favorites vs the Giants
  • Giants vs Royals Over / Under today: 8.5 Runs
  • Giants / Royals TV Channel: BSKC | NSBA

The San Francisco Giants (+130) visit Ewing M. Kauffman Stadium to take on the Kansas City Royals (-155) on Saturday, September 21, 2024. First pitch is scheduled for 5:10pm EDT in Kansas City, MO.

This season, the Giants are 75-79 against the spread (ATS), while the Royals are 85-69 ATS.

Giants vs Royals Starting Pitchers Today:

  • Giants starting pitcher: Landen Roupp 0-1, 3.05 ERA
  • Royals starting pitcher: Brady Singer 9-11, 3.53 ERA

Giants vs. Royals Odds, Run Line, Over/Under & Moneyline

SpreadOver / UnderMoneyline
Giants+1.5 -175O 8.5 -120+130
Royals -1.5 +145U 8.5 +100-155

Giants vs Royals Prediction for Today’s Game

Based on recent trends the model predicts the Royals will win Saturday‘s MLB game with 55.3% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.


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We’ve highlighted some favorite MLB player prop bets for Giants players for Saturday‘s game, looking at profitable historical betting trends:

Best Giants Player Prop Bets Today:

  • Mike Yastrzemski has hit the Home Runs Over in 6 of his last 15 games (+19.00 Units / 127% ROI)
  • Patrick Bailey has hit the Hits Under in 10 of his last 14 away games (+10.65 Units / 76% ROI)
  • Patrick Bailey has hit the Total Bases Under in 11 of his last 14 away games (+10.55 Units / 62% ROI)
  • Tyler Fitzgerald has hit the Runs Over in 15 of his last 25 away games (+10.00 Units / 39% ROI)
  • LaMonte Wade Jr has hit the Singles Over in 7 of his last 8 games (+8.00 Units / 100% ROI)

And here are some favorite MLB player prop bets for Royals players for Saturday‘s game, looking at profitable historical betting trends:

Best Royals Player Prop Best Bets Today:

  • Salvador Perez has hit the Runs Under in 38 of his last 49 games (+20.85 Units / 28% ROI)
  • Bobby Witt Jr. has hit the Home Runs Over in 11 of his last 39 games (+15.55 Units / 40% ROI)
  • Bobby Witt Jr. has hit the Hits Under in 25 of his last 32 games (+12.15 Units / 20% ROI)
  • Tommy Pham has hit the Walks Under in 16 of his last 18 games (+12.10 Units / 30% ROI)
  • Bobby Witt Jr. has hit the Singles Under in 18 of his last 28 games (+10.75 Units / 38% ROI)
  • The San Francisco Giants have hit the Game Total Over in 44 of their last 76 away games (+13.55 Units / 16% ROI)
  • The San Francisco Giants have hit the Team Total Under in 36 of their last 59 games (+9.14 Units / 13% ROI)
  • The San Francisco Giants have covered the 1st Five Innings (F5) Run Line in 22 of their last 35 away games (+7.30 Units / 17% ROI)
  • The San Francisco Giants have hit the 1st Five Innings (F5) Team Total Over in 27 of their last 45 away games (+6.40 Units / 12% ROI)
  • The San Francisco Giants have hit the Moneyline in 14 of their last 24 away games (+6.10 Units / 22% ROI)
  • The Kansas City Royals have covered the Run Line in 43 of their last 77 games at home (+10.24 Units / 11% ROI)
  • The Kansas City Royals have hit the Game Total Under in 14 of their last 19 games (+9.50 Units / 45% ROI)
  • The Kansas City Royals have hit the 1st Five Innings (F5) Team Total Under in 11 of their last 15 games at home (+6.65 Units / 38% ROI)
  • The Kansas City Royals have hit the Moneyline in 45 of their last 77 games at home (+5.85 Units / 6% ROI)
  • The Kansas City Royals have hit the Team Total Under in 9 of their last 12 games at home (+5.70 Units / 41% ROI)

Giants Against the Spread (ATS) Record

Against the spread this season, the Giants are 76-78 against the Run Line (-9.3 Units / -4.62% ROI).

  • 75-79 when betting on the Moneyline for -13.5 Units / -6.86% ROI
  • 78-70 when betting on the total runs Over for +1.45 Units / 0.86% ROI
  • 70-78 when betting on the total runs Under for -15.8 Units / -9.3% ROI

Royals Against the Spread (ATS) Record

Against the spread this season, the Royals are 85-69 against the Run Line (+6.48 Units / 3.12% ROI).

  • 82-72 when betting on the Moneyline for +4.25 Units / 2.2% ROI
  • 67-81 when betting on the total runs Over for -21.65 Units / -12.94% ROI
  • 81-67 when betting on the total runs Under for +6.6 Units / 3.89% ROI

Royals vs Giants Home Run Prop Bets Today

Over Under
Mike Yastrzemski (SF) 0.5 +450 0.5 -650
Bobby Witt Jr. (KC) 0.5 +450 0.5 -650
Salvador Perez (KC) 0.5 +450 0.5 -650
MJ Melendez (KC) 0.5 +550 0.5 -800
Heliot Ramos (SF) 0.5 +550 0.5 -800

Royals vs Giants Total Hits Prop Bets Today

Over Under
Salvador Perez (KC) 0.5 -250 0.5 +185
Tommy Pham (KC) 0.5 -250 0.5 +185
Yuli Gurriel (KC) 0.5 -250 0.5 +180
Patrick Bailey (SF) 0.5 -225 0.5 +175
Michael Massey (KC) 0.5 -225 0.5 +170

Royals vs Giants RBI Prop Bets Today

Over Under
Bobby Witt Jr. (KC) 0.5 +130 0.5 -175
Salvador Perez (KC) 0.5 +140 0.5 -185
Michael Massey (KC) 0.5 +155 0.5 -200
Heliot Ramos (SF) 0.5 +165 0.5 -225
Michael Conforto (SF) 0.5 +170 0.5 -225

Royals vs Giants Strikeout Prop Bets Today

Over Under
Landen Roupp (SF) 3.5 -120 3.5 -110
Brady Singer (KC) 5.5 +100 5.5 -130

Landen Roupp has thrown his curveball 37% of the time (68/182) when he’s behind in the count this season — 2nd highest among qualified RPs in MLB*; League Avg: 10% — 98th Percentile.

Landen Roupp has walked 15 of 81 left-handed batters (18%) this season — 4th highest among NL Relievers; League Avg: 9% — fourth Percentile.

Landen Roupp has thrown his curveball 45% of the time (323/723) this season — 3rd highest among qualified RPs in MLB*; League Avg: 19% — 96th Percentile.

Landen Roupp has a strike rate of just 57% (212/371) vs left-handed batters this season — lowest among NL Relievers; League Avg: 64% — first Percentile.

Royals Starting Pitcher Stats & Trends

Brady Singer has thrown his slider 57% of the time (438/767) with two-strikes this season — highest among among AL Starters; League Avg: 24% — 100th Percentile.

Brady Singer has thrown his slider 45% of the time (1,260/2,781) this season — 2nd highest among qualified SPs in MLB; League Avg: 22% — 97th Percentile.

Brady Singer allowed a batting average of just .202 vs right-handed batters (13th best)– 89th Percentile and .296 vs left-handed batters this season (third worst among non-qualified SPs)– third Percentile.

Brady Singer has thrown his slider 44% of the time (688/1,565) vs left-handed batters this season — highest among qualified SPs in MLB; League Avg: 19% — 100th Percentile.

Giants Keys to the Game vs. the Royals

The Giants are 192-6 (.970) when leading entering the 9th inning since the 2022 season — 4th best in MLB; League Avg: .951.

The Giants are 30-200 (.130) when trailing entering the 8th inning since the 2022 season — 5th best in MLB; League Avg: .095.

The Giants are 46-30 (.605) after a home loss since the 2023 season — 5th best in MLB; League Avg: .520.

The Giants are just 38-41 (.481) after a win as favorites since the 2023 season — 5th lowest in MLB; League Avg: .574.

Royals Keys to the Game vs. the Giants

The Royals are just 24-105 (.186) when their opponents score in the first inning since the 2022 season — lowest in MLB; League Avg: .361.

The Royals are just 20-64 (.238) when their opponents score in the first inning since the 2023 season — 2nd lowest in MLB; League Avg: .373.

The Royals are just 25-42 (.373) vs bottom 10 scoring offenses since the 2023 season — lowest in MLB; League Avg: .560.

The Royals are just 44-47 (.484) when they’ve scored in the first inning since the 2023 season — 2nd lowest in MLB; League Avg: .627.

The Giants are batting just .216 with two outs this season — 3rd lowest in MLB; League Avg: .235.

Giants hitters have an OBP of just .233 (6,438 PA’s) with two-strikes since last season — 3rd lowest in MLB; League Avg: .247.

Giants hitters have 846 strikeouts in 3,387 PA’s (25%) against LHP since last season — tied for 4th highest in MLB; League Avg: 23%.

Giants hitters are slugging just .182 on pitches out of the zone since the 2022 season — 5th lowest in MLB; League Avg: .211.

Royals hitters have just 263 strikeouts in 1,367 PA’s (19%) against LHP this season — 3rd best in MLB; League Avg: 23%.

Royals hitters have drawn 84 walks in 1,367 PA’s (6%) against LHP this season — lowest in MLB; League Avg: 8%.

The Royals have won just 55% of games in which they have scored in at least three different innings on the road since last season — 2nd lowest in MLB; League Avg: 72%.

The Royals won only 28% of their road games in the 2023 season — 2nd lowest in MLB; League Avg: 48%.

Opponents have a groundball rate of 49% against Giants pitchers since last season — highest in MLB; League Avg: 43%.

Opponents have a groundball rate of 49% against Giants pitchers since the 2022 season — highest in MLB; League Avg: 43%.

Opponents have a groundball rate of 49% against Giants pitchers this season — highest in MLB; League Avg: 43%.

Giants pitchers have walked 180 of 2,805 batters (6%) when facing the leadoff batter in the inning since last season — 2nd best in MLB; League Avg: 8%.

Opponents have a groundball batting average of .282 against Royals pitchers with runners on base since the 2022 season — tied for 2nd highest in MLB; League Avg: .256.

Royals pitchers have 404 three-pitch strikeouts since last season — 3rd fewest in MLB.

Royals pitchers have a strikeout rate of just 21% since the 2022 season — 5th lowest in MLB; League Avg: 23%.

The average home run distance against the Royals pitchers since last season is 403.8 feet — 2nd highest in MLB; League Avg: 398.4

Royals vs. Giants Injuries Tonight That May Affect Prop Bets 

  • Kansas City Royals – No Injuries Reported
  • San Francisco Giants – No Injuries Reported

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About the Author

Shane Jackson

Read More @Sjacksonmgm

Shane Jackson is a Web Content Writer for BetMGM, covering MLB and NBA. After graduating from the University of Kansas, his previous stops include MLB.com, Lawrence Journal-World, Manhattan Mercury, Bet Chicago Sports, WynnBET, and Sportsbook Review.

Shane Jackson is a Web Content Writer for BetMGM, covering MLB and NBA. After graduating from the University of Kansas, his previous stops include MLB.com, Lawrence Journal-World, Manhattan Mercury, Bet Chicago Sports, WynnBET, and Sportsbook Review.