How does this impact Boston's postseason hopes? More importantly, what does it do to the team's contention window in the short and medium term?

Orthopedic surgeons call Achilles' tears some of the most difficult injuries an athlete can sustain, and recovery can take longer for pro athletes.

The Celtics announced Tuesday that Jayson Tatum suffered a ruptured Achilles tendon in his right foot on Monday against the Knicks.