MLB Predictions for Sunday, September 13, 2026: WP Baseball Predictor's Best Bets
Sunday's MLB slate is loaded with 15 games spanning the full afternoon and evening, giving bettors and fantasy players plenty of opportunities to leverage advanced analytics. At WP Baseball Predictor, our sabermetric engine — powered by wOBA, FIP, DER, Pythagorean Win%, and pitcher xFIP — has processed today's matchups and identified several high-confidence picks alongside a handful of intriguing dark horse home run values. Here's a breakdown of the games worth watching most closely on September 13, 2026.
Top Games to Watch: WP Predictor Breakdowns
New York Mets @ New York Yankees — 1:35 PM ET
Subway Series games carry their own electricity, and this one arrives with meaningful late-season implications. Christian Scott takes the mound for the Mets against Yankees starter Cam Schlittler in what figures to be a fascinating pitching duel between two young arms. Our model comes out Confident on the Yankees moneyline, reflecting the edge our sabermetric framework identifies in this matchup when factoring in defensive efficiency and run environment at the stadium level.
For dark horse home run value, keep an eye on Luis García Jr. on the Yankees side. Late-season situations like this can create favorable matchup spots for hitters who have shown the ability to elevate against developing starters. On the Mets side, Francisco Lindor is always a threat in high-profile moments and represents solid value if you're looking for a prop play on the visiting club.
Philadelphia Phillies @ Atlanta Braves — 1:35 PM ET
Andrew Painter vs. Grant Holmes sets up one of the afternoon's most compelling pitching matchups on paper. The WP model is Confident on the Braves moneyline here, with Atlanta's underlying metrics supporting a strong home advantage in this contest. The Braves' ability to generate quality contact and suppress opposing offenses through strong defensive positioning factors heavily into this call.
On the dark horse HR front, Michael Harris II stands out as a value play for the Braves — a dynamic athlete capable of providing pop in the middle of a lineup. For the Phillies, Bryce Harper never needs much of a reason to be on your radar, but in a game where Philadelphia may need to manufacture offense against a favorable home pitcher, Harper's ability to change a game with one swing makes him a worthwhile dart throw.
Los Angeles Dodgers @ Miami Marlins — 1:40 PM ET
The Dodgers head to Miami as WP's model issues a Confident pick on the Dodgers moneyline. Emmet Sheehan draws the start for Los Angeles against Marlins righty Eury Pérez in a matchup where the Dodgers' organizational depth and lineup construction give them a meaningful structural advantage according to our Pythagorean Win% and wOBA-based offensive models.
Mookie Betts earns the dark horse HR nod for Los Angeles today. In late-season games where the Dodgers are favored and Betts finds himself in favorable counts, his power production is a consistent source of value. Don't overlook Griffin Conine on the Marlins side — a player with sneaky pop who can exploit any lapse in Dodgers pitching, making him a worthwhile longshot for those seeking bigger returns on a prop.
San Diego Padres @ San Francisco Giants — 7:20 PM ET
Sunday Night Baseball delivers Nick Pivetta for San Diego against Logan Webb in what could be the most watchable pitching matchup of the entire slate. This is a classic pitcher's duel setup in a park that typically suppresses run scoring. Despite the quality arm Webb represents for San Francisco, the WP model is Confident on the Padres moneyline, suggesting San Diego's offensive profile and underlying production metrics give them the edge even in this challenging environment.
Jackson Merrill is the dark horse HR pick for the Padres — a rising talent with the kind of raw power that can turn a tight, low-scoring game on a single swing. For the Giants, keep Bryce Eldridge in mind as an intriguing name to watch in a game where one big moment could define the result.
Baltimore Orioles @ Toronto Blue Jays — 1:37 PM ET
Trevor Rogers vs. Dylan Cease gives this AL East clash a strong pitching storyline. The WP model is Confident on the Blue Jays moneyline, with Toronto's home advantage and the analytical edge our DER and FIP metrics identify in this matchup driving the call. Alejandro Kirk is flagged as today's dark horse HR value for the Blue Jays — a hitter whose compact stroke and contact ability can produce unexpected power in the right situation.
Additional WP Picks at a Glance
- Tigers moneyline (Confident) — Jackson Jobe at home gives Detroit the edge over Colorado's Gabriel Hughes.
- Nationals moneyline (Confident) — Jake Irvin at home vs. the Angels, with Washington holding the analytical advantage per WP's model.
- Brewers moneyline (Confident) — Robert Gasser at home vs. Chase Burns and the Reds in a favorable Milwaukee matchup.
- Red Sox moneyline (Confident) — Payton Tolle at Fenway gives Boston the edge over Kansas City's Noah Cameron.
- Mariners moneyline (Confident) — Bryce Miller on the road against Jacob Lopez, with Seattle's advanced metrics supporting the call.
- Astros +1.5 (Slight Lean) — Houston shows enough resilience in run-line spots against Tampa Bay's Freddy Peralta.
- Pirates +1.5 (Slight Lean) — Bubba Chandler vs. Matthew Boyd in Chicago; Pittsburgh's run-line value is the play.
- Rangers +1.5 (Slight Lean) — Cal Quantrill vs. Eduardo Rodriguez in Arizona; Texas offers run-line cushion value.
- Guardians vs. Twins & White Sox vs. Cardinals — Both games are rated Not Yet Rated due to TBD starters; monitor lineup news before wagering.
Final Thoughts: Sunday's Best Bets from WP Baseball Predictor
With nine Confident-rated picks on the board and a loaded evening capper in San Francisco, Sunday, September 13, 2026 is one of the stronger single-day slates of the late season. The WP sabermetric engine continues to identify edges through wOBA-based offensive modeling, FIP-adjusted pitching evaluations, and Pythagorean Win% frameworks that cut through surface-level narratives.
As always, the model's picks are analytical outputs — not guarantees. Use them as one informed layer in your overall betting or fantasy decision-making process. For the full data behind every pick, visit wpbaseballpredictor.com and explore today's complete game-by-game breakdown.