From 0-3 to third place in the Eastern Conference.

The surging Celtics won their fifth straight Sunday in Toronto, squandering a 23-point second-half lead but holding on for a 121-113 victory at Scotiabank Arena.

With the win, Boston leapfrogged the Raptors in the East standings. At 15-9, Joe Mazzulla’s club now trails only the 19-5 Detroit Pistons and 16-7 New York Knicks, both of whom the Celtics defeated during their current run of 10 wins in 12 games.

“We just had to weather the storm,” Jaylen Brown told NBC Sports Boston sideline reporter Abby Chin after the game. “(The Raptors) upped the pressure. They did the same thing in preseason twice where they came back, so I guess third time’s a charm. We didn’t let it happen today.”

Brown led Boston with 30 points, eight rebounds and fiv

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