Jason Derulo is facing a new challenge ahead of his big Super Bowl performance -- no, not a TikTok challenge ... he recently suffered a nasty injury and now he's walking on a cane.
A Source familiar tells TMZ ... the "Wiggle" singer was injured playing basketball 3 weeks ago. Apparently, he was going up for a rebound and wound up landing on someone's foot ... he now has a small break in his foot and a torn ligament to boot.
He was lucky enough to avoid surgery, but he did have stem cells injected, which help speed up recovery time.