What you need to know about the Wild Card Series matchups

Who is ready for October baseball? Well, we won't need to wait for the start of a new month in order to get some postseason action, since the MLB playoffs begin Tuesday. That's when all four of the Wild Card Series presented by AbbVie will get underway.

Here is what you need to know about the two official Wild Card Series matchups. Notes about each other series will be added as the bracket becomes finalized.

All stats are updated through Saturday.

AMERICAN LEAGUE

(5) Red Sox at (4) Yankees

Schedule

Game 1: Tuesday, 8 p.m. ET on NBC & Peacock
Game 2: Wednesday, 8 p.m. ET on NBC & Peacock
Game 3 (if necessary): Thursday on NBC/Peacock/NBCSN

Season series: The Yankees went 7-6 against their archrival this season, including 4-2 at Yankee Stadium, which is the host site for this three-game series.

Postseason history: This will be the seventh postseason series between these two foes. The Yankees won the most recent meeting, triumphing in the 2025 AL Wild Card Series, two games to one.

Keys to the matchup: The Rivalry was a tale of two halves this season. The Yankees won four of the first five games before the Red Sox found their stride, then Boston swept four home games in June just before its historic 15-game winning streak. New York wrapped things up by taking three of four back at home at the end of August, outscoring the Sox, 26-9. The Bronx Bombers used their bread and butter -- the home run -- to overpower their rivals. But both clubs can really spin it, making for an intriguing playoff matchup. The Yankees and Red Sox are both in the top three in MLB in team ERA.

Player to watch: Aaron Judge. The Captain has had a frustrating year, missing 84 games over the summer with a rib injury. He returned in early September, only to head back to the IL with a calf strain after seven games. Judge is planning to play in the Wild Card Series, but nothing is certain. Even if he hasn’t been his typical MVP self this season when on the field, and even if he’s not at 100% in the postseason, Judge will still transform the Yankees’ lineup. Much maligned for his postseason performance over the years, Judge shook that trend in 2025. He hit .500 in seven games, including four hits in three games against the Red Sox.

NATIONAL LEAGUE

(5) Cubs at (4) Padres

Schedule

Game 1: Tuesday, 10 p.m. ET/7 p.m. PT on Peacock & NBCSN
Game 2: Wednesday, 10 p.m. ET/7 p.m. PT on Peacock & NBCSN
Game 3 (if necessary): Thursday on NBC/Peacock/NBCSN

Season series: The Cubs went 5-1 against the Padres in 2026, taking two of three in late April at Petco Park and sweeping a three-game set from June 29-July 1 at Wrigley Field. The final contest between the two clubs was a 23-3 Chicago rout.

Postseason history: This is a rematch of the 2025 NL Wild Card Series, which featured the Cubs and Padres squaring off at Wrigley Field. The Cubs pulled out the win in a tense, low-scoring series, winning Game 1 and Game 3 by identical scores of 3-1 around a 3-0 loss in Game 2.

Keys to the matchup: This series likely hinges on whether the Padres’ starting pitchers can safely deliver leads to their bullpen. With Bradgley Rodriguez, Adrian Morejon and Mason Miller on the back end, San Diego has a strong chance of holding onto any late edge. But can Michael King, Nick Pivetta (recently returned from a lengthy injury absence) and Co. hold down the Cubs’ offense? Chicago leads MLB in OPS at .765 and leads the NL with 218 home runs, so it won’t be an easy task for Padres pitching. Cubs starters have had their own issues, though -- the rotation’s 4.27 ERA is tied for 18th in MLB -- and Fernando Tatis Jr. and Jackson Merrill are among the key Padres hitters getting hot at the right time.

Player to watch: Pete Crow-Armstrong. All eyes will be on the presumptive NL MVP in this series after Crow-Armstrong put up a season for the ages, becoming the seventh member of the 40-40 club while playing flat-out elite defense in center field. He didn’t do much offensively in his first taste of the postseason in 2025, going a combined 5-for-27 (.185) with a .399 OPS between the Wild Card Series and the NLDS, but PCA has leveled up his hitting considerably this season. His rare combination of power and speed makes him a major threat to change the game with one swing, and it’s often his first swing: Crow-Armstrong’s nine leadoff home runs rank third in MLB.