San Francisco Giants at Arizona Diamondbacks odds, picks and predictions

Analyzing Tuesday’s San Francisco Giants at Arizona Diamondbacks odds and lines, with MLB expert picks, predictions and best bets.

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The San Francisco Giants (29-32) and Arizona Diamondbacks (28-32)  continue a 3-game NL West series in Phoenix Tuesday with 1st pitch at 9:40 p.m. ET (MLB Network). Let’s analyze BetMGM Sportsbook’s lines around the Giants vs. Diamondbacks odds and make our expert MLB picks and predictions for the best bets.

Season series: Diamondbacks lead 3-2

San Francisco lost its 5th straight game in Monday’s lid-lifter. The Giants went 1-for-6 with runners in scoring position in a 4-2 loss. San Francisco has batted .185 (5-for-27) with runners in scoring position over its 5 consecutive losses.

Arizona lost its last 5 games in May; it is so far 3-0 in June. The Diamondbacks hit 2 HRs Monday and have 9 over their last 4 games.

Giants at Diamondbacks projected starters

LHP Kyle Harrison vs. LHP Blake Walston

Harrison (4-2, 4.15 ERA) is making his 13th start. He has a 1.4 WHIP, 3.1 BB/9 and 8.3 K/9 in 65 IP.

  • Last outing: Loss, 5 IP, 4 ER, 12 H, 1 BB, 5 K in 6-1 loss vs. Philadelphia Phillies Wednesday
  • Career vs. Diamondbacks: 0-0, 6.75 ERA (4 IP, 3 ER), 6 H, 1 BB, 5 K in 1 start on April 20

Walston (0-0, 2.16 ERA) is lined up for his 2nd start and 3rd appearance. He has a 1.44 WHIP, 5.4 BB/9 and 9.7 K/9 in 8 1/3 IP.

  • Last outing: No-decision, 4 2/3 IP, 0 ER, 4 H, 1 BB, 4 K in 3-1 loss vs. Miami Marlins on May 26
  • Has never faced the Giants
  • Is a 22-year-old rookie who notched an aggregate 4.76 ERA, 1.53 WHIP at Double- and Triple-A (2022-24)

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Giants at Diamondbacks odds

Provided by BetMGM Sportsbook, one of the most popular sports betting apps; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 6:57 a.m. ET.

  • Moneyline: Giants +100 (bet $100 to win $100) | Diamondbacks -120 (bet $120 to win $100)
  • Run line (RL)/Against the spread (ATS): Giants +1.5 (-210) | Diamondbacks -1.5 (+155)
  • Over/Under (O/U): 9 (O: -105 | U: -115)

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Giants at Diamondbacks picks and predictions

Prediction

Diamondbacks 4, Giants 3

Moneyline

San Francisco has lost 6 straight road games to Arizona.

The lefty-lefty mound matchup swings the home 9 into its best platoon splits. The Snakes own MLB’s 3rd-best OPS vs. port-siders (.775). Despite its recent 5-game slide, Arizona is still 14-12 over its last 26 games.

The confidence level in Walston is not high, however. Consider a partial-unit play — FanDuel Sportsbook has the best available price — on ARIZONA (-112).

Run line/Against the spread

Not enough return coming back here. PASS.

Over/Under

The Under cashed Monday and is 5-2-2 in this series since Aug. 1.

There is just a barely-perceptible lean on FanDuel’s UNDER 9 (-112) for Tuesday’s game. Consider going in with less than a full unit.

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