The 31-year-old sat out Week 17 but appeared in all three postseason games for the Bills. He made seven catches for 88 yards in Sunday's AFC Championship Game loss to the Kansas City Chiefs.
"There was no way I was going to miss the playoff game, especially after watching in Week 17, so I was going to figure it out one way or another," Beasley told reporters.
Beasley elaborated that it wasn't a full break and it didn't affect his movement.
"You take a few meds and you suck it up," he said.
The nine-year NFL veteran had the best regular season of his career with 82 catches for 967 yards and four touchdowns. He earned a spot on the All-Pro second team with his production from the slot.
Beasley had competed in six playoff games entering this year with the Bills and Dallas Cowboys, but he had a bigger role on this squad, and Buffalo had high expectations as the No. 2 seed in the AFC.
The team is likely happy he toughed it out. The receiver caught seven passes—including three for a first down—in a 27-24 first-round win over the Indianapolis Colts that was the franchise's first playoff victory since 1995.
It will also endear him to teammates and fans even more going into 2021 as the Bills enter the season as one of the top contenders in the AFC.