Athletics vs. Diamondbacks Prediction: Springs’ Struggles Meet a Complete Unknown in Bratt
Jeffrey Springs' rough season faces off against Diamondbacks rookie Mitch Bratt's MLB debut in a game shaped more by depth than starting pitching.
The Athletics visit Chase Field on Monday to take on an Arizona Diamondbacks club fighting for playoff positioning, with Arizona sitting at 51-48 against an Athletics team at 42-57 that has been one of the league’s more inconsistent clubs this season. First pitch is set for 9:40 p.m. ET.
Jeffrey Springs takes the mound for the Athletics, while Mitch Bratt gets the start for Arizona in just his first career big-league appearance.
A Steep Price for a Diamondbacks Debut Start
Oddsmakers have installed Arizona as sizable home favorites despite the rookie starter, with the Diamondbacks priced around -160 to -168 on the moneyline depending on the book, while the Athletics sit in the +135 to +136 range as the road underdog. The total is set at 9, right in the middle of the pack, and on the run line, the Athletics getting 1.5 runs come in around +124 to +130, while Arizona laying the runs sits around -149 to -156.
That steep price despite Bratt’s complete lack of MLB track record shows just how much confidence the market has in Arizona’s overall roster and bullpen depth to cover for a rookie making his debut on the mound.
Springs’ Rough Season Against a Complete Unknown in Bratt
Jeffrey Springs enters at 3-9 with a 6.08 ERA over 97.2 innings, numbers that reflect one of the more difficult seasons of his career. He has struck out 84 hitters but has allowed 26 home runs, a clear sign that his stuff has been hittable all year. Arizona’s lineup, even without needing a great start from Bratt, should have plenty of opportunities to do damage against a pitcher who has struggled to keep the ball in the park.
Mitch Bratt brings zero MLB innings of meaningful track record to Monday’s start, having thrown just 6 innings with a 6.00 ERA in a tiny sample. There’s no reliable way to project how he handles a lineup at this level, which is exactly why the number reflects trust in Arizona’s roster and bullpen rather than trust in the starter himself. That uncertainty could cut either way, but it also means the Athletics have a puncher’s chance if Bratt struggles to find the strike zone early.
With Springs’ extended track record of struggles going up against a complete unknown in Bratt, this game is more about which team’s supporting cast can bail out its starter than which arm has the edge on paper.
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Prediction and Best Bet
Expect Arizona’s deeper roster to eventually take over even if Bratt’s debut is shaky, with the Diamondbacks pulling away behind their bullpen in the middle innings.
- Prediction: Diamondbacks 6, Athletics 4
- Best Bet: Diamondbacks on the run line (-1.5)
| Tue, Sep 15 • 6:40 PM | Spread | Money | Total |
| Athletics |  +1.5 (-120) |  +188 |  O 8 (-105) |
| Tampa Bay Rays |  -1.5 (-102) | -225 | U 7.5 (102) |
With so much uncertainty around a rookie making his major league debut, leaning on Arizona’s deeper roster to cover the run line looks safer than trusting a shaky Springs outing to keep the Athletics within a run.
Bettors looking to get in on tonight’s American League action should check the latest BetMGM promo code offers before first pitch, and those comparing markets around the league can also browse the Fanatics Sportsbook promo code page for more MLB specials.