SAN ANTONIO (Reuters) - Kawhi Leonard scored a career-high 33 points, eight of which came in final minute, as San Antonio Spurs thwarted a determined upset bid by the Toronto Raptors in a 102-95 win that allowed the Spurs to remain unbeaten at home.

With San Antonio clinging to an 88-84 lead, Leonard took charge of the game at the end, hitting two jumpers and then sinking four straight free throws to secure the victory.

With the victory, San Antonio (64-13) established a franchise record for wins in a season that was set in 2005-06 when the Spurs went 63-19. The Spurs have now defeated every team in the NBA this season.

The Spurs are 39-0 at the AT&T Centre this season and have supplanted the 1995-96 Chicago Bulls for the longest home winning streak to start a season in NBA history.

The current Bulls side are in danger of missing the play-offs as they slumped to a 94-90 loss to the Detroit Pistons. Reggie Jackson had 22 points and Tobias Harris had 21 to lead Detroit, which got double-figures scoring from all five starters.

Harris' put-back with 49.5 seconds left in the fourth quarter put the Pistons up 88-83. Jackson hit two clutch free-throws with 20.4 seconds left to help Detroit secure its third win in four games against Chicago this season.

Jimmy Butler led all scorers with 28 points and recorded the first triple-double of his career with career-highs in rebounds (17) and assists (12).

Chicago, playing without starters Derrick Rose and Taj Gibson, trails Indiana by two games and the Pistons by 2 ½ games.