SAN ANTONIO Often the forgotten member of Miami's "Big Three," Chris Bosh stepped up with LeBron James and Dwyane Wade sitting out to help the Heat record a big win and move closer to securing home-court advantage throughout the NBA playoffs.
Bosh scored 23 points, including the winning three-pointer with 1.9 seconds remaining, and the Heat beat San Antonio 88-86 Sunday with James, Wade and Mario Chalmers watching from the locker room because of injuries.
"We are the defending champs no matter who we put out there," Bosh said. "We are still the Miami Heat. We believe in ourselves. Each one of these guys is a professional. We played bigger roles in other cities, but we came together and accepted lesser roles to win a championship here. We can still tap into that."
Miami (58-15) swept the season series against San Antonio (55-18) and earned the head-to-head tiebreaker with the Spurs.
Miami beat San Antonio 105-100 on Nov. 29 when the Spurs opted to rest Tim Duncan, Tony Parker, Manu Ginobili and Danny Green. All but Ginobili (strained right hamstring) played Sunday.
Duncan had 17 points and 12 rebounds and Kawhi Leonard had 17 points and 11 rebounds for the Spurs, who had a seven-game home winning streak snapped.
Bosh finished 3 for 5 on three-point attempts, including the final shot from straightaway. He let out a yell after making the shot and celebrated with teammates when Parker's jumper bounced off the backboard as the buzzer sounded.
"He's a heck of a player, number one, but he's also a hell of a shooter," Spurs coach Gregg Popovich said. "Timmy contested it, and he hit a big shot to win the game. Give him credit."
James and Wade were surprise late scratches while Chalmers didn't play Friday in New Orleans and was listed as day-to-day because of a sprained right ankle.
James strained his right hamstring in the first half of the Heat's 108-89 victory over New Orleans. Wade injured his right ankle during Miami's 101-97 loss to the Chicago Bulls on Wednesday night, which snapped the Heat's 27-game winning streak, but played Friday.