Pierce bet that he'd walk from his home to the local studios of his "Speak" show broadcasting gig for Fox in a bathrobe, a walk of close to 20 miles.

The Celtics were well on their way to taking care of business in Game 2 as they led by 20 points in the third quarter, but things went downhill fast. The Knicks ended the game on a 23-6 run and walked away with a win after Jalen Brunson hit a pair of clutch free throws.

Former Boston Celtics great Paul Pierce learned a valuable lesson Wednesday: If you make an outlandish prediction on live television, you better be ready to follow through. Pierce paid for that decision Thursday, as he walked 20 miles to the FS1 studio after his Celtics prediction backfired in horrific fashion.