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BOSTON -- The Celtics got a bit of a reality check from their Atlantic Division foe Friday night.

The Toronto Raptors outscored Boston by 10 points in the second half with the help of timely 3-pointers and plenty of free throws to earn a 103-101 win at TD Garden.

Isaiah Thomas carried the load offensively for Boston with 25 points and seven assists -- both team highs -- while big men Amir Johnson, Kelly Olynyk and Tyler Zeller all reached double figures.

DeMar DeRozan paced Toronto with 23 points, with newcomer DeMarre Carroll and forward Terrence Ross adding 21 apiece.

STARTING FIVE
Marcus Smart, Avery Bradley, Jae Crowder, David Lee, Tyler Zeller

ON THE RUN
The Celtics established a fast-paced tempo out of the gate. While Boston and Toronto ended the first quarter tied at 26-26, the Celtics outscored the Raptors 9-0 on fast-break points in the frame.

The C's used defense to create offense on several occasions, including this Jae Crowder steal that led to an Avery Bradley 3-pointer:

ROADBLOCK
The game slowed down to a snail's pace after the first period, however.

The referees made liberal use of their whistles, issuing a total of 17 fouls (nine on Toronto, eight on Boston) in the second half alone. Jared Sullinger, Jae Crowder and Raptors guard Cory Joseph also were assessed technical fouls in the sloppy, testy quarter.

The Raptors would make the most of their trips to the charity line throughout the night, converting 30 of their 35 free throw attempts.

DEEP IMPACT
The Celtics had trouble defending the 3-pointer Friday night -- especially in the second half -- and it cost them dearly.

The Raptors knocked down 11 long balls on 26 attempts, including three over a two-plus minute span in the third quarter that helped them establish a commanding lead they wouldn't relinquish.

Carroll did the bulk of Toronto's scoring from the perimeter by hitting four of his seven 3-point attempts, many of which were wide-open looks.

PLAY OF THE NIGHT
Marcus Smart had missed his first five field goal attempts as of late in the second quarter. Then he did this:

UP NEXT
The Celtics face a daunting task Sunday, as they welcome Tim Duncan, LaMarcus Aldridge and the San Antonio Spurs to town. Tipoff is scheduled for 3:30 p.m. ET at TD Garden.

Thumbnail photo via Gregory J. Fisher/USA TODAY Sports Images