New York Yankees at Arizona Diamondbacks Picks and Prediction for Saturday, September 19, 2026

Chase Field in Phoenix hosts Game 2 of this three-game NL-AL interleague series at 8:10 PM ET as the New York Yankees (89-64) visit the Arizona Diamondbacks (80-74) in the most individually compelling pitching matchup on Saturday's entire MLB slate. The Yankees took Friday's series opener behind Gerrit Cole, and Saturday features two of the NL and AL's most interesting rotation stories: Cam Schlittler — whose 1.95 ERA and 0.904 WHIP rank second and second respectively in Yankees history — against Brandon Pfaadt, who spent time in the bullpen and minors earlier in 2026 before rejoining the rotation on June 30 and going 7-2 with a 2.83 ERA over 12 starts since. The Yankees enter having placed Aaron Judge on the 10-day IL with a right calf strain and with Jazz Chisholm Jr. also injured — personnel losses that reduce New York's lineup ceiling meaningfully heading into a Chase Field dome environment that has consistently suppressed scoring. Read on to find out who takes the series lead in our Yankees vs. Diamondbacks prediction. Don't go down on strikes! Get our top MLB Predictions and increase your bankroll!

Schlittler Is Having One of the Greatest Seasons in Yankees Pitching History 

When the conversation turns from Cy Young to MVP, you've entered rarified air. Cam Schlittler's 2026 ranks second in Yankees history in WHIP (0.904) and eighth in ERA (1.95) — a 25-year-old right-hander from Walpole, Massachusetts who grew up a Red Sox fan and has spent his first full season delivering the kind of sustained dominance that Yankees fans associate with the franchise's greatest pitching chapters. He's already seventh in franchise history in strikeouts (228) and could easily crack the top three with two more representative outings. The last time Schlittler allowed more than a run in one of his starts was August 3 — a 47-day run of dominance that encompasses the final stretch of the regular season. He allowed no runs and one hit in his last outing as he ran roughshod over the Mets.

At this point in the season, Schlittler is as close to a sure thing as it gets. His four-seam fastball and wipeout slider generate the swing-and-miss profile that 228 strikeouts and a 5.4% walk rate reflect — the combination that makes Chase Field's dome environment the optimal setting for his continued dominance. The controlled atmospheric conditions remove weather variance, and a lineup depth that has been reduced by the Judge and Chisholm injuries still features Cody Bellinger (.274 AVG), Ben Rice (38 HR, 92 RBI), and the supporting cast that has won the Yankees 60.5% of their favored moneyline games this season.

The New York Yankees have hit the moneyline in 31 of their last 50 away games — a 62% road money-line conversion rate generating +8.65 units and a 14% ROI that is the most consistent road-team organizational trend in the American League. That away-game quality reflects the Yankees' rotation depth and the organizational confidence that Schlittler's individual dominance amplifies — and at -138, the price reflects a genuine individual pitching quality advantage rather than any artificial inflation.

Pfaadt Has Been Reborn Since June 30 — 7-2 and 2.83 ERA Over Last 12 Starts

Brandon Pfaadt has struggled to establish himself in the intervening years since his 2023 World Series heroics — spending time in the bullpen and in the minors earlier in 2026 before rejoining the rotation on June 30 and going 7-2 with a 2.83 ERA over 12 starts. That second-half transformation is the most underappreciated individual pitching development story in the NL West, and the Pinstripe Alley preview specifically noted that Pfaadt has been "lights out" since returning to the rotation — a genuinely competitive arm whose home dome advantage and recent momentum make him the most dangerous individual matchup challenge Schlittler has faced in his recent dominant stretch.

Pfaadt's career 34-30 record and 4.80 ERA reflect the inconsistency of his first three seasons — but the 2.83 ERA across his last 12 starts is the relevant data point, not the career number. His sinker-slider combination generates the ground-ball contact that Chase Field's artificial turf amplifies into quick outs, and the dome environment gives his secondary offerings the stable release conditions needed to generate the movement that his best performances have featured. Gabriel Moreno leads the Diamondbacks' lineup — going 3-for-4 with a home run in his most recent competitive appearance — and Nolan Arenado's 26 home runs give Arizona the middle-of-the-order production that Pfaadt needs to receive sufficient run support in a game against the AL's best individual pitching performance.

The Arizona Diamondbacks have hit the Game Total Under in 16 of their last 23 games — a 70% Under rate generating +8.40 units and a 33% ROI — and the 1st Five Innings Team Total Under in 20 of their last 24 games (+15.65 units, 50% ROI). Those two converging Under trends run directly through the Pfaadt start cycle, where his contact-management approach and Chase Field's 0.97 park factor combine to keep scoring below posted totals with remarkable recent consistency.

Yankees vs. Diamondbacks Picks

• Money Line Pick: New York Yankees

Schlittler is having one of the greatest seasons in Yankees pitching history — second in franchise history in WHIP, eighth in ERA — and he has not allowed more than a run in a start since August 3. The Yankees have hit the moneyline in 31 of their last 50 away games, have won 60.5% of their favored games this season, and carry the organizational depth through their bullpen to protect any lead Schlittler builds. Judge and Chisholm's injuries reduce the lineup ceiling, but Ben Rice's 38 home runs and Cody Bellinger's contact quality give the Yankees sufficient run-support capacity to back the best individual pitching performance on Saturday's board. Take New York.

• Over/Under Pick: Under 8 Runs

The Arizona Diamondbacks have hit the Game Total Under in 16 of their last 23 games — a 70% Under rate generating +8.40 units and a 33% ROI — and the 1st Five Innings Team Total Under in 20 of their last 24 games, the most profitable single team-totals trend on Saturday's entire board. Schlittler has not allowed more than one run in a start since August 3, Chase Field's 0.97 park factor and dome environment remove weather as a scoring amplifier, and a Yankees lineup missing Judge and Chisholm projects below the offensive ceiling that the posted total was set against. Two pitchers with the most dominant recent form on each of their respective teams, meeting in a dome that has been one of baseball's most consistent Under environments over the last month — take the Under 8 runs at -115.