Saturday is Division Series Opening Day across both leagues. Sportsnet and MLB's schedule desks list four Game 1s in Eastern time: Chicago White Sox at Cleveland Guardians at 1 p.m., Atlanta Braves at Los Angeles Dodgers at 4 p.m., New York Yankees at Tampa Bay Rays at 6:30 p.m., and San Diego Padres at Milwaukee Brewers at 8:30 p.m.

Broadcast lanes split by league. TNT Sports' AL package puts Guardians-White Sox and Rays-Yankees on TBS with truTV and HBO Max streaming. National League windows sit on FOX (Dodgers-Braves) and FS1 (Brewers-Padres). Fans can treat the day as a continuous board from afternoon baseball in Cleveland through a late night in Milwaukee.

Named pitching headlines the previews: Parker Messick vs. Hagen Smith; Tarik Skubal vs. an Atlanta opener; Gerrit Cole vs. Drew Rasmussen; Robbie Ray vs. Jacob Misiorowski. Cleveland, Tampa Bay, Milwaukee, and Los Angeles used first-round byes. Chicago, New York, San Diego, and Atlanta arrived through the Wild Card round — Atlanta via Thursday's 6-2 clincher over Philadelphia.

Backstory: best-of-five series reward early leads and punish bullpen mismanagement. Saturday's results will not finish any series, but they set travel, rest, and starter math for Games 2 and 3.

Where to watch: TBS/HBO Max for AL; FOX and FS1 for NL; local radio apps for team feeds.

What we know:
All four pairings, Saturday times, and primary TV windows are published. Starter names for most Game 1s are confirmed.

What we don't:
Final scores — these cards are previews only until last outs post Saturday night.

These four openers are previews, not finals. Event-driven FINAL cards come after last outs. Until then, stick to the published times — 1, 4, 6:30, and 8:30 p.m. ET — and the TBS, FOX, FS1, and HBO Max windows above.