Brooklyn Nets coach Avery Johnson gave his players the day off Sunday. Some watched football. Others enjoyed a quiet day with their families before the onslaught of the NBA regular season.

Nets center Brook Lopez had something else in mind. He grabbed his brother, loaded up on Doritos and sour gummy worms, and headed to New York's Javits Center to hang out with Boba Fett, Captain America, Catwoman and an oddly bulbous-looking Mr. T, who was posing for photos with a toy machine gun.

"He...