Philadelphia Phillies vs Arizona Diamondbacks Prediction 4/12/26 MLB Picks Today

The Arizona Diamondbacks and the Philadelphia Phillies meet Sunday in MLB action from Citizens Bank Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s an Arizona Diamondbacks vs. Philadelphia Phillies prediction.

Starting Pitching Matchup

The Arizona Diamondbacks will send out Zac Gallen for the start here and Gallen is 1-1 with a 3.00 ERA and 9 strikeouts this season. In his last five starts against the Phillies, Gallen is 2-1 with a 3.51 ERA and 24 strikeouts. Andrew Painter is 1-0 with a 4.82 ERA and 9 strikeouts this season for the Phillies. This will be Painter’s first career start against Arizona.

Arizona Diamondbacks Recap

The Arizona Diamondbacks come into this game looking to bounce back from a 4-3 loss to the Phillies on Saturday to fall to 8-7 on the year. After this series, the Diamondbacks will head on the road again for a series against the Baltimore Orioles.

Diamondbacks Have Three-Game Win Streak Snapped

Entering Saturday, Corbin Carroll leads the Diamondbacks with 14 hits including 3 doubles, 3 triples, 2 home runs and a team-high 11 RBIs while Alek Thomas has logged 3 doubles with 5 RBIs as well this season. Ketel Marte has 11 hits with 2 doubles, a home run and 6 RBIs and Geraldo Perdomo has 8 hits, with 2 doubles, a home run and 4 RBIs as well this season. Gabriel Moreno also has 11 hits with 5 doubles and Jose Fernandez has 2 home runs and 5 RBIs this season. Ildemaro Vargas also has 12 hits with 2 doubles, a triple, a home run and 5 RBIs.

Philadelphia Phillies Recap

The Philadelphia Phillies come into this game looking to add on to their win over Arizona from Saturday to improve to 7-7 on the year. After this series, the Phillies will square off against the Chicago Cubs in a home series.

Phillies Snap Three-Game Slide

Going into Saturday, Adolis Garcia has 11 hits with a pair of doubles, 2 home runs and 4 RBIs while Kyle Schwarber has 8 hits with 2 doubles, 3 home runs and 6 RBIs. Brandon Marsh has 12 hits with 3 doubles, 2 home runs and 9 RBIs while Justin Crawford also has 12 hits with 2 doubles, a triple and an RBI. Trea Turner has 14 hits with 4 doubles and 3 RBIs and Bryce Harper’s added 12 hits with 4 doubles, 2 home runs and 8 RBIs this season.

Arizona Diamondbacks @ Philadelphia Phillies Betting Trends: April 12, 2026

• Probable Starting Pitcher: Andrew Painter      Record this season: 1-0      ERA: 4.82
• Home Record: 1-0
• Last 5 against Diamondbacks: –

Why the Philadelphia Phillies will win

• The Diamondbacks have lost each of their last seven Sunday road games against National League opponents.
• The Phillies have won 21 of their last 26 home games after playing the previous day.
• The Diamondbacks have failed to cover the run line in seven of their last eight games against NL East opponents following a loss.
• The Phillies have covered the run line in four of their last five home games against the Diamondbacks following a home win.
• The Diamondbacks have trailed after 3 innings in six of their last seven games at Citizens Bank Park.
• The Phillies have led after 5 innings in four of their last five games as home favorites against NL West opponents.

• Probable Starting Pitcher: Zac Gallen      Record this season: 1-1      ERA: 3.00
• Road Record: 0-1
• Last 5 against Phillies: 1-2

Why the Arizona Diamondbacks will win

• The Diamondbacks have won four of their last five games as underdogs after playing the previous day.
• The Phillies have lost four of their last five games as home favorites against NL West opponents following a home win.
• The Diamondbacks have covered the run line in each of their last nine road games against NL East opponents.
• The Phillies have failed to cover the run line in each of their last seven home games.
• The Diamondbacks have led after 3 innings in three of their last four day games against the Phillies.
• The Diamondbacks have led after 5 innings in six of their last eight day games against NL East opponents.

Total Runs Facts

• Five of the Phillies’ last six games after playing the previous day have gone UNDER the total runs line.
• Four of the Diamondbacks’ last five games after playing the previous day have gone OVER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the Diamondbacks’ last six games.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in each of the last six games between the Diamondbacks and Phillies.

Philadelphia Phillies Player Prop Facts

• Bryce Harper has hit a home run in each of the Phillies’ last two day games against opponents that held a winning record.
• Bryson Stott has recorded at least one hit in each of the Phillies’ last eight Sunday games against NL West opponents that held a winning record.
• Kyle Schwarber ranks T9th in the league in Home Runs (4) this season.

Arizona Diamondbacks Player Prop Facts

• Zac Gallen has recorded a win in four of his last five appearances against NL East opponents.
• Ildemaro Vargas has recorded at least one hit in each of his last 12 road appearances.
• Lourdes Gurriel Jr. has hit a home run in three of his last seven road appearances against the Phillies.
• Corbin Carroll ranks 7th amongst qualified players for Slugging Percentage (.644) this season.

Matchup/League Facts

• The Phillies rank 1st in the league for walks allowed this season (32).
• The Phillies rank 28th in the league for opponent batting average this season (.257).
• The Diamondbacks rank 2nd in the league for triples this season (5).
• The Diamondbacks rank 29th in the league for on-base percentage this season (.285).

Arizona Diamondbacks vs. Philadelphia Phillies Prediction

I’m on the over in this one. I just don’t trust either starting pitcher here and I think both could get roughed up early and often in this matchup and then are also followed up by two questionable bullpens so give me the over in a high-scoring affair on Sunday.