Learn About Player Prop Odds Breakdown for Giants vs D-Backs - Wednesday May 20, 2026

+115O/U: 8.5
(-125/+105)-135

Tyler Mahle – Over/Under 4.5 Strikeouts (+125/-160)
Tyler Mahle’s 91.7-mph fastball velocity this year is in the 15th percentile among all starting pitchers.
Explain: Velocity is a key component to fastball success in generating strikeouts and preventing runs.
Luis Arraez – Over/Under 1.5 Hits (+150/-195)
When it comes to his batting average talent, Luis Arraez is projected as the 4th-best batter in the league by the leading projection system (THE BAT X).
Explain: THE BAT X is a highly sophisticated projection system that accounts for a multitude of factors and regularly tests among the most accurate systems available. Batting average is the most common measure of a player’s ability to generate hits.
San Francisco Giants – 2H Moneyline
According to the leading projection system (THE BAT), the San Francisco Giants’ bullpen profiles as the 9th-worst among all the teams in MLB.
Explain: Most bettors only consider the starting pitcher, but a weak bullpen sneakily creates an easier matchup for the opposing offense and boosts a game’s runs.

Merrill Kelly – Over/Under 17.5 Pitching Outs (-150/+120)
Throwing 100.3 adjusted pitches per GS this year on average, Merrill Kelly checks in at the 99th percentile.
Explain: Pitchers who average more pitches per game are more likely to go deeper into games and record more outs.
Adrian Del Castillo – Over/Under 0.5 Hits (-130/+100)
Adrian Del Castillo has primarily hit in the top-half of the lineup this year (92% of the time), but he is projected to hit 7th on the lineup card in today’s game.
Explain: The lower in the order a player bats, the fewer plate appearances he will get and the fewer opportunities he will get to hit the Over for every market. A player who hits lower in the order than he normally does may provide extra value opportunity since the market may be based on him hitting higher.
Ketel Marte – Over/Under 1.5 Total Bases (+110/-140)
Ketel Marte pulls a lot of his flyballs (38.1% — 94th percentile) and has the misfortune of hitting them towards the league’s 3rd-deepest RF fences in today’s matchup.
Explain: This player’s skill set does not match up particularly well with the park he’s in today, which may lead to worse-than-usual performance.

Arizona Diamondbacks – Over/Under 2.5 1st Five Innings (F5) Team Total (+100/-130)
The Arizona Diamondbacks have hit the 1st Five Innings (F5) Team Total Under in 24 of their last 35 games (+11.80 Units / 28% ROI)
San Francisco Giants – Over/Under 4.5 Team Total (+115/-145)
The San Francisco Giants have hit the Team Total Under in 16 of their last 23 away games (+8.55 Units / 33% ROI)
Geraldo Perdomo – Over/Under 1.5 Total Bases (+150/-195)
Geraldo Perdomo has hit the Total Bases Under in 9 of his last 10 games at home (+7.60 Units / 44% ROI)

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