Inside Edge
Arizona Diamondbacks66.7% HA O 5.555.6% ER O 2.550% BBA O 1.5
Season
All Zac Gallen propsProps — 202610 games with closing lines
Earned Runs
10g50%Over: 5-5
2vs O 2.5-130
vs
Giants5/18
Giants5/18✗✓✓✓✗✗✓✗✗✓
H: 25%(4)A: 80%(5)
Seasonality
Inside Edge
Star RatingsAvg Rating
2★★★★★
5-Star Games
1(11%)
Total Matchups
9Distribution
5
4
3
2
1
Prop Performance by Star Rating
How Gallen's prop overs perform at the primary line based on InsideEdge pitcher star rating
| Stars | Pitcher KsO 4.5 | Earned RunsO 2.5 | Hits AllowedO 5.5 | Walks AllowedO 1.5 | Outs RecordedO 17.5 |
|---|---|---|---|---|---|
| ★★★★★ | 0%(0-1) | 100%(1-0) | 100%(1-0) | 100%(1-0) | 0%(0-1) |
| ★★★★★ | 60%(3-2) | 40%(2-3) | 66.7%(2-1) | 60%(3-2) | 33.3%(1-2) |
| ★★★★★ | 0%(0-3) | 50%(1-1) | 50%(1-1) | 0%(0-2) | 50%(1-1) |
Recent Scouting Notes
★★★★★vs Robbie Ray
5/18Pitchers with similar repertoires to Gallen have an ERA of 4.49 against the Giants over the last year.
★★★★★vs MacKenzie Gore
5/12Rangers hitters have a 1 star average matchup against Gallen.
★★★★★vs Mitch Keller
5/7Pitchers with similar repertoires to Gallen have an ERA of 4.27 against the Pirates over the last year.
Game Log
Bet
$
6-8 Over10g · 14 props
| Date ↓ | Opp | Line | Actual | Result | Odds |
|---|---|---|---|---|---|
| 5/18 | vsGiants | O 2.5 | 2 | L | -130 |
| 5/12 | @ Rangers | O 2.5 | 7 | W | -133 |
| 5/7 | vs Pirates | O 2.5 | 4 | W | -112 |
| 5/1 | @ Cubs | O 2.5 | 6 | W | +120 |
| 5/1 | @Cubs | O 1.5 | 6 | W | -171 |
| 4/25 | vs Padres | O 4.5 | 0 | L | +115 |
| 4/25 | vsPadres | O 3.5 | 0 | L | -145 |
| 4/18 | vs Blue Jays | O 2.5 | 2 | L | +103 |
| 4/12 | @ Phillies | O 2.5 | 3 | W | -120 |
| 4/7 | @ Mets | O 2.5 | 1 | L | +126 |
| 4/7 | @Mets | O 1.5 | 1 | L | -185 |
| 4/1 | vs Tigers | O 2.5 | 0 | L | +110 |
| 4/1 | vsTigers | O 1.5 | 0 | L | -175 |
| 3/26 | @ Dodgers | O 2.5 | 4 | W | -152 |
Arizona Diamondbacks Teammates
View allFrequently Asked Questions
How often does Zac Gallen hit the over on earned runs 2.5?
Zac Gallen hits the over on earned runs 2.5 55.6% of the time in 2026, going 5-4 with an average actual of 3.2.
Is Zac Gallen over 2.5 earned runs a good bet?
Based on 10 games in 2026, betting $100 on Zac Gallen over 2.5 earned runs at best closing odds has returned -$66 (-6.6% ROI). The hit rate is 55.6% with an average actual of 3.2.
What is Zac Gallen's earned runs average this season?
Zac Gallen averages 3.2 earned runs per game in 2026 across 10 games. The primary line is set at 2.5.