SAN ANTONIO — Tim Duncan had 31 points and 14 rebounds to help the short-handed San Antonio Spurs escape with a 99-97 victory over the Atlanta Hawks on Saturday night. Kawhi Leonard added 23 points and DeJuan Blair had 11 for San Antonio. The Spurs were without Tony Parker (neck) and Manu Ginobili (hamstring strain), who sat out the game with injuries.