San Antonio claimed their 11th win of the season with an 111-106 overtime win over Toronto Raptors.
NBA: Parker leaves it late as Spurs edge Raptors
Six of Parker's points came in the extra period as the Spurs claimed their 11th win and improved their league-best record on the road to 7-1.
Tim Duncan added 26 points for San Antonio, while DeMar DeRozan led Toronto with 29.
With less than 1 min 15 sec remaining in the second overtime, Parker connected on jump shots on back-to-back possessions to help seal the win.
"It was a hard fought game, anybody could've won it," said Gregg Popovich, San Antonio's head coach, afterwards.
"We played better in the overtime."
Carmelo Anthony scored 29 points in the New York Knicks' 121-100 win over the Detroit Pistons.
The Pistons had lost on their last five trips to Madison Square Garden and it got no better for them despite 21 points from Brandon Knight.
The Philadelphia 76ers beat the Phoenix Suns 98-85 on the back of Jrue Holiday's big day.
Holiday scored 33 points and also provided 13 assists, while Michael Beasley's 21 points led the Suns.
Kevin Garnett scored 24 points and pulled down 10 rebounds as the Boston Celtics beat the Orlando Magic 116-110 in overtime.
The Brooklyn Nets saw off the Portland Trail Blazers 98-85, while the Denver Nuggets were 102-84 winners over the New Orleans Hornets.
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