Diamondbacks vs Giants Prediction, Odds, Moneyline, Spread & Over/Under for June 30

Odds updated as of 6:13 a.m.

The MLB's Tuesday schedule includes the Arizona Diamondbacks taking on the San Francisco Giants.

Here's everything you need to know before checking out today's MLB odds and spreads on FanDuel Sportsbook.

Diamondbacks vs Giants Game Info

• Arizona Diamondbacks (42-42) vs. San Francisco Giants (35-49)
• Date: Tuesday, June 30, 2026
• Time: 9:40 p.m. ET
• Venue: Chase Field -- Phoenix, Arizona
• Coverage: Dbacks.TV and NBCS-BA

Diamondbacks vs Giants Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: ARI: (-108) | SF: (-108)
• Spread: ARI: +1.5 (-178) | SF: -1.5 (+146)
• Total: 9 -- Over: (-122) | Under: (+100)

Diamondbacks vs Giants Probable Starting Pitchers

Probable Pitchers: TBA (Diamondbacks) vs Landen Roupp (Giants) - 5-7, 0.00 ERA

Roupp (5-7) gets the start for the Giants. As of this writing, there's been no pitching decision announced by the Diamondbacks. The Giants have a 5-11-0 ATS record in Roupp's 16 starts that had a set spread. The Giants have been the moneyline underdog in 10 of Roupp's starts this season, and they went 4-6 in those games.

Diamondbacks vs Giants Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Giants win (59.4%)

Diamondbacks vs Giants Moneyline

• Arizona is a -108 favorite on the moneyline, while San Francisco is a -108 underdog on the road.

Diamondbacks vs Giants Spread

Diamondbacks vs Giants Over/Under

• A total of 9 runs has been set for the Diamondbacks-Giants game on June 30, with the over available at -122 and the under at +100.

Bet on Arizona Diamondbacks vs. San Francisco Giants on FanDuel today!

Diamondbacks vs Giants Betting Trends

• The Diamondbacks have been victorious in 22, or 61.1%, of the 36 contests they have been chosen as favorites in this season.
• This year Arizona has won 25 of 39 games when listed as at least -108 on the moneyline.
• The Diamondbacks' games have gone over the total in 34 of their 83 opportunities.
• The Diamondbacks have posted a record of 44-39-0 against the spread this season.
• The Giants have been the underdog on the moneyline 52 total times this season. They've gone 19-33 in those games.
• In games it has played as a moneyline underdog with odds of -108 or longer, San Francisco has an 18-33 record (winning only 35.3% of its games).
• In the 82 games bookmakers have set an over/under for the Giants, they have combined with opponents to go over the total 37 times (37-40-5).
• The Giants have a 36-46-0 record ATS this season (covering 43.9% of the time).

Diamondbacks Player Leaders

• Ketel Marte leads Arizona with a slugging percentage of .478, fueled by 35 extra-base hits. He has a .263 batting average and an on-base percentage of .319.
• Among qualifying hitters in MLB, his batting average ranks 62nd, his on-base percentage ranks 97th, and he is 36th in slugging.
• Marte will look for his fourth straight game with a hit in this contest. During his last five outings he is hitting .263 with four home runs, a walk and four RBIs.
• Corbin Carroll leads the Diamondbacks in OBP (.362) and total hits (83) this season. He's batting .276 while slugging .528.
• He is 39th in batting average, 33rd in on-base percentage and 15th in slugging in MLB.
• Geraldo Perdomo has collected 69 base hits, an OBP of .359 and a slugging percentage of .364 this season.
• Perdomo brings a five-game hitting streak into this game. During his last five outings he is batting .421 with two doubles, a home run, two walks and four RBIs.
• Ildemaro Vargas is batting .256 with a .300 OBP and 44 RBI for Arizona this season.

Giants Player Leaders

• Luis Arraez has put up a team-best OBP (.362) and slugging percentage (.450). He's batting .326.
• Including all qualified hitters, he is third in batting average, while his on-base percentage ranks 33rd and he is 59th in slugging.
• Arraez brings a seven-game hitting streak into this game. In his last 10 games he is batting .378 with four doubles, a home run, four walks and five RBIs.
• Jung Hoo Lee is hitting .321 with 19 doubles, three triples, five home runs and 13 walks. He's slugging .460 with an on-base percentage of .353.
• He ranks fifth in batting average, 45th in on-base percentage and 51st in slugging percentage in the majors.
• Casey Schmitt paces the Giants with 86 hits.
• Rafael Devers is batting .240 with 24 doubles, a triple, 14 home runs and 27 walks.

Diamondbacks vs Giants Head to Head

• 6/29/2026: 5-4 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 5/27/2026: 3-2 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 7.5, Favorite Moneyline: -118, Underdog Moneyline: +100)
• 5/26/2026: 7-5 ARI (Favorite: Giants, Spread: -1.5, Total: 8, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 5/25/2026: 6-2 ARI (Favorite: Giants, Spread: -1.5, Total: 7.5, Favorite Moneyline: -134, Underdog Moneyline: +114)
• 5/20/2026: 6-3 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -118, Underdog Moneyline: +100)
• 5/19/2026: 5-3 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -124, Underdog Moneyline: +106)
• 5/18/2026: 12-2 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 9/17/2025: 5-1 SF (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 9/16/2025: 6-5 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 9/15/2025: 8-1 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -132, Underdog Moneyline: +112)

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