M.L.B. Postseason: How the Red Sox Beat the Yankees in the A.L. Wild-Card Game - The New York Times
2021 MLB playoffs: Takeaways, best moments and plays from Friday's postseason games - ABC13 Houston
MLB magic numbers, schedules: Yankees pass Red Sox for 1st Wild Card; Cardinals clinch tie (9/27/21)
2021 MLB playoffs schedule is set after the 162-game season concludes : NPR
2023 MLB playoffs: Four things to know about repeat World Series matchups as Astros, Phillies aim for rematch
MLB Playoff Schedule: How 2022 Playoffs Will Work with New Format - Fastball
MLB playoff bracket 2021: Full schedule, TV channels, scores for AL and NL games
Baseball postseason questions answered
Rays lose 2021 ALDS Game 3 to Red Sox
MLB playoffs 2021 - Fenway magic is in the air as Red Sox roll into ALCS - ESPN
MLB playoffs 2023: Diamondbacks-Rangers World Series schedule and MLB playoff results
Red Sox's World Series Aspirations Now in View After Shocking Upset of Rays, News, Scores, Highlights, Stats, and Rumors
2021 MLB Postseason schedule, results - Battery Power
MLB playoffs 2021 - Who's going to the World Series? Answering the big questions left for Astros-Red Sox and Braves-Dodgers - ESPN
2021 MLB playoffs - Our predictions from the wild-card games through the World Series - ESPN