Arizona Diamondbacks vs. San Francisco Giants: MLB Betting Preview
Date: Tuesday, May 13th, 2025 | 9:45 PM ET
Location: Oracle Park, San Francisco, CA
TV Coverage: NBCS
Money Line: Diamondbacks -114 | Giants -103
Total Line: 7.5
Betting Preview
Here’s our comprehensive betting preview for the NL West matchup between the Arizona Diamondbacks and the San Francisco Giants on Tuesday, May 13th at Oracle Park. We provide you with detailed analysis, current odds, and expert predictions to help with your handicapping decision based on the projected lineups and confirmed starting pitchers.
Betting Odds
| ML | RL | Total | |
|---|---|---|---|
| ARI | -114 | -1.5 | O 7.5 (-111) |
| SF | -103 | +1.5 | U 7.5 (-109) |
At 9:45 PM ET, the Diamondbacks and Giants square off in an NL West matchup at Oracle Park in San Francisco. Despite playing on the road, Arizona is a slight favorite at -114, while the Giants are listed at -103. The over/under line is set at 7.5 runs.
Brandon Pfaadt takes the mound for Arizona, facing off against Robbie Ray for San Francisco. The Giants (24-18) are looking to snap a four-game losing streak, while the Diamondbacks (22-20) are 4th in the NL West. NBCS will provide television coverage.
Team Standings & Current Form
Arizona Diamondbacks (22-20)
- Division Standing: 4th in NL West, 5.5 games behind Dodgers
- Divisional Record: 3-2
- Home/Road Split: 11-12 home, 11-8 road
- Current Streak: Won 2 straight
- Last 10 Games: 5-5
- As Favorite/Underdog: 0-0 as favorite, 22-20 as underdog
- Series Record: 5-6-2
San Francisco Giants (24-18)
- Division Standing: 3rd in NL West, 3.5 games behind Dodgers
- Divisional Record: 3-4
- Home/Road Split: 12-6 home, 12-12 road
- Current Streak: Lost 4 straight
- As Favorite/Underdog: All games as underdog this season
- Home as Underdog: 12-6
- Series Record: 8-4-1
Previous Game Recap
Arizona won the most recent game of this series with a low-scoring 2-1 victory. The Diamondbacks entered as slight favorites at -122 and capitalized on their opportunities. San Francisco had a chance to tie or win the game in the ninth inning, but Shelby Miller closed things out for Arizona.
Justin Verlander started for the Giants, pitching six innings and allowing two earned runs. Merrill Kelly delivered an excellent performance for Arizona, going seven innings and giving up just one run while earning the win. The Diamondbacks managed only two more hits than the Giants but struck out eight times compared to San Francisco’s total.
Projected Lineups
Arizona Diamondbacks
| Player | Batting Order | Position |
|---|---|---|
| Ketel Marte | 1 | 2B |
| Corbin Carroll | 2 | RF |
| Randal Grichuk | 3 | DH |
| Lourdes Gurriel Jr. | 4 | LF |
| Josh Naylor | 5 | 1B |
| Eugenio Suárez | 6 | 3B |
| Gabriel Moreno | 7 | C |
| Alek Thomas | 8 | CF |
| Geraldo Perdomo | 9 | SS |
| Brandon Pfaadt | – | SP |
San Francisco Giants
| Player | Batting Order | Position |
|---|---|---|
| Mike Yastrzemski | 1 | RF |
| Willy Adames | 2 | SS |
| Jung Hoo Lee | 3 | CF |
| Matt Chapman | 4 | 3B |
| Wilmer Flores | 5 | DH |
| Heliot Ramos | 6 | LF |
| LaMonte Wade Jr. | 7 | 1B |
| Patrick Bailey | 8 | C |
| Christian Koss | 9 | 2B |
| Robbie Ray | – | SP |
Team Records
Arizona Diamondbacks: 22-20 SU / OU 18-21 / Runline 22-20
San Francisco Giants: 24-18 SU / OU 23-18 / Runline 24-18
Pitching Matchup Analysis
Brandon Pfaadt (ARI)
- Season Record: 6-2
- ERA: 3.28
- WHIP: 1.22
- Starts: 8
- Home/Road Split: 1.8 ERA at home, 6.39 ERA on road
- Recent Form: Win in last start (6.1 IP, 0 ER)
- Note: Allowed at least one home run in three straight outings before his last start
Robbie Ray (SF)
- Season Record: 5-0
- ERA: 2.84
- WHIP: 1.20
- Starts: 8
- Home/Road Split: 2-0 with 1.92 ERA at home, 3-0 with 4.45 ERA on road
- Recent Form: Win in last start (6 IP, 1 ER)
- Note: Has not taken a loss since April 13th
Offensive Comparison
Arizona Diamondbacks
- Runs Per Game: 5.0 (5th in MLB)
- Slugging Percentage: 4th in MLB
- Home Runs: Top 5 team
- Strikeouts: 7th fewest per game
Key Performers:
- Corbin Carroll: Team-leading 13 HR, 5-for-21 with 3 HR in last 6 games
- Geraldo Perdomo: .293 BA, 7-for-21 in last 6 games
- Eugenio Suárez: 2nd on team in HR, but batting just .200
San Francisco Giants
- Runs Per Game: 4.6 (13th in MLB)
- Road Scoring: 4.9 runs per game
- Team Batting Average: .232 (21st in MLB)
- Home Runs: 11th in MLB
Key Performers:
- Heliot Ramos: Red hot with 13-for-24 (.542) in last 7 games, 2 HR, 7 RBIs, .290 BA overall with 7 HR
- Wilmer Flores: 7 HR, 33 RBIs (4th in MLB)
Analysis and Prediction
This NL West matchup features two teams heading in opposite directions. The Diamondbacks have won two straight and are playing solid baseball, while the Giants are trying to snap a four-game losing streak at home.
The pitching matchup presents an interesting contrast. Brandon Pfaadt has struggled significantly on the road (6.39 ERA) compared to his home performance (1.8 ERA), which could be problematic at Oracle Park. Meanwhile, Robbie Ray has been nearly unbeatable this season (5-0 record) and has been particularly effective at home with a 1.92 ERA.
Arizona’s offense has been one of the league’s best (5.0 runs per game, 5th in MLB), led by Corbin Carroll’s 13 home runs and Geraldo Perdomo’s consistent hitting. However, Pfaadt’s road struggles raise concerns about the Diamondbacks’ chances.
San Francisco benefits from Heliot Ramos’ torrid hitting streak (13-for-24 in his last seven games) and should have an advantage with Ray on the mound at home, where he’s been dominant. Despite their recent struggles, the Giants’ strong home record (12-6) and Ray’s excellent form make them an attractive play.
Betting Pick: San Francisco Giants (-103)
The combination of Ray’s home dominance (1.92 ERA) and Pfaadt’s road struggles (6.39 ERA) creates a significant pitching advantage for the Giants. With Ramos swinging a hot bat and San Francisco needing to end their four-game skid, they should capitalize on their home-field advantage.
Total Recommendation: Under 7.5 (-109)
Both starting pitchers have been effective this season, with Ray’s 2.84 ERA and Pfaadt coming off a shutout performance in his last start. The low-scoring nature of their previous meeting (2-1 final) suggests another pitcher-friendly affair. A same-game parlay of Giants ML and Under could provide increased value for more aggressive bettors.
