Jayson Tatum appears to be in good spirits after undergoing surgery on his Achilles, giving fans a thumbs up in his first social media post since Monday's devastating injury. Tatum underwent surgery Tuesday in New York after he suffered a ruptured Achilles late in Boston's Game 4 loss to the Knicks at Madison Square Garden on Monday night.

Facing elimination and with Jayson Tatum sidelined, the Celtics kept their season alive in Game 5 against the Knicks.

After Jayson Tatum's season-ending injury, the Celtics needed to regroup ahead of an elimination game, so they relied on two of their trusty veterans.

In a film session between Games 4 and 5 of their Eastern Conference semifinal series, as the Celtics prepared for their first game against the New York Knicks without Jayson Tatum, veterans Jaylen Brown and Al Horford challenged the remaining members of the team to rally for their injured superstar.

The Boston Celtics staved off elimination at TD Garden on Wednesday night, ousting the New York Knicks by 25 points and winning a home contest for the first time in the second-round Eastern Conference series.