PREVIEW: The San Antonio Spurs and Oklahoma City Thunder face off at T-Mobile Arena on Sunday, December 14 , in what promises to be a captivating NBA Cup semifinal matchup. The Thunder have made history with a 24-1 record to start the season , while the Spurs have found their rhythm, winning nine of their last twelve games. San Antonio has won four of their last five contests, but Oklahoma City enters this contest riding an impressive five-game winning streak. The sportsbooks have installed Oklahoma City as heavy favorites with a moneyline of -459 and a spread of -10.5 . The Thunder's elite two-way dominance sets the stage for a compelling challenge. Oklahoma City allows just 106.2 points per game while holding opponents to 42.7 percent shooting , establishing themselves as one of the league's most suffocating defensive units. Shai Gilgeous-Alexander continues his MVP-caliber season, averaging 32.6 points and 6.5 assists , supported by Chet Holmgren, who is posting 24.0 points over the last ten games . Meanwhile, the Spurs' Stephon Castle has emerged as a dynamic force, averaging 30.0 points and 10.0 rebounds over the last ten games , positioning San Antonio as a team that can compete despite facing the league's best defense.