The Philadelphia Phillies host the Arizona Diamondbacks on April 12, 2026. First pitch from Citizens Bank Park is scheduled for 1:35 p.m. EDT. The game will be broadcast on NBCS-PH.
The Phillies are favored by -146 on the moneyline and by -1.5 on the run line. The Diamondbacks are +124 on the moneyline and +1.5 on the run line. The total is set at 8.5 runs.
Find my MLB picks and Diamondbacks vs Phillies prediction below, as well as probable pitchers, weather report, and more.
Diamondbacks vs Phillies Prediction
- Diamondbacks vs Phillies Pick: Over 8.5
My Diamondbacks vs Phillies best bet is on the Over. Make sure to find the best odds by checking our live MLB odds page.
Diamondbacks vs Phillies Odds
| Diamondbacks Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -182 | 8.5 -105o / -115u | +124 |
| Phillies Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +150 | 8.5 -105o / -115u | -146 |
- Diamondbacks vs Phillies spread: Diamondbacks +1.5 (-182), Phillies -1.5 (+150)
- Diamondbacks vs Phillies over/under: 8.5 (-105o / -115u)
- Diamondbacks vs Phillies moneyline: Diamondbacks +124, Phillies -146
Diamondbacks vs Phillies Projected Starting Pitchers
| Zac Gallen (RHP) | Stat | Andrew Painter (RHP) |
|---|---|---|
| 1-1 | W-L | 1-0 |
| 0.1 | fWAR (FanGraphs) | 0.4 |
| 3.00 / 5.61 | ERA / xERA | 4.82 / 2.55 |
| 4.01 / 4.68 | FIP / xFIP | 1.86 / 3.64 |
| 1.33 | WHIP | 1.61 |
| 4.8% | K-BB% | 16.7% |
| 45.8% | GB% | 38.7% |
| 89 | Stuff+ | 96 |
| 103 | Location+ | 115 |
Diamondbacks vs Phillies MLB Betting Preview
Philadelphia Phillies Betting Preview
The Phillies erased an early 2-0 deficit to steal game two from the Diamondbacks, 4-3. The win put Philadelphia back at .500 for the year, and it can move to 8-7 with a win.
Tasked with securing the series win is the Phillies super prospect, Andrew Painter, who stands 6-foot-7 and sits 97 MPH on his four-seamer.
While Painter throws gas, he doesn't get swings and misses, sitting in the seventh percentile among qualified pitchers in Whiff rate despite boasting that elite fastball. He needs to hone in on his secondary stuff to miss more bats.
The numbers suggest Painter could be in for a good run. He has a 4.82 ERA with a dazzling 2.55 xERA and a 1.86 FIP. Those underlying numbers are driven by Painter walking just two hitters in 9 1/3 innings and giving up no homers. That's a cheat code to posting strong peripherals.
While that's nice, Painter can't sustain a 1.93 BB/9 and 0.00 HR/9 forever. He walked over 3.5 batters per nine in Triple-A last year and gave up over 1.50 homers per nine. On the flip side, it was Painter's first season back from Tommy John Surgery, and command is usually the last thing to return.
However, MLB hitters will force Painter to stay in the zone. I expect more walks to come from the fireballer.
The Phillies' offense got a much-needed lift from Kyle Schwarber and Bryce Harper in game two. That accounted for Schwarber's fourth homer and Harper's third on the year — those two form the engine of the offense.
Coming into Saturday, Philadelphia sat 21st among MLB lineups with a 91 wRC+, boasting a 9.3% walk rate (22nd) and a 23% strikeout rate (14th). It also ranks 26th in hard-hit rate, which is mildly concerning.
But this matchup could be a good one for the Phillies.
Arizona Diamondbacks Betting Preview
Even with a loss on Saturday, the Diamondbacks maintain a winning record. It's a bit odd for a team with a winning record to have a -7 run differential and could indicate an eventual decline.
Zac Gallen will be an integral part of determining Arizona's legitimacy. He had a terrible 2025 campaign, leading to a one-year prove-it deal. He's off to a better start in 2026, posting a 3.00 ERA with a 5.61 xERA and a 4.01 FIP.
I have no faith in Gallen. He allows a .299 xBA (12th percentile) and ranks below the 25th percentile among qualified pitchers in average exit velocity allowed (91.3 mph) and barrel rate allowed (12.5%). His strikeout rate is down to 14.3% from 21% last year, which was the one thing he still did well. Perhaps it's a conscious effort to hunt for fewer K's for quicker outs, but that only works if the contact is weak.
If any team that ranks 25th or worse in wRC+ can be a top-10 offense the rest of the way, it's Arizona. It has a woeful 83 wRC+ so far, and Corbin Carroll is the only hitter holding the team above water with a 197 wRC+.
The Diamondbacks are hitting the ball hard, ranking eighth among MLB teams in hard-hit rate, but they also rank 25th in ground ball rate. If they start to elevate more, those hard-hit balls will give this offense a much-needed jolt.
I love the Carroll, Ketel Marte, and Geraldo Perdomo trio. However, Marte and Perdomo have a sub-.600 OPS and are hitting below the Mendoza line. Their proven track record makes me think that won't last long.
The bottom of the order could be a real problem. Nolan Arenado looks like a lost cause, and Alek Thomas has to be close to DFA territory. No lineup is perfect, but that duo is providing nothing.
Diamondbacks vs Phillies Picks
I'm rolling with the Over.
Gallen could struggle against the Phillies patient offense. And that'll give way to a Diamondbacks bullpen that ranks 23rd among relief staffs in ERA.
It wouldn't shock me if Philly accounted for five or six of the nine runs on its own.
I also touched on my Painter concerns and want to fade him with the walks likely to come.
Pick: Over 8.5
