Marcus Smart hits game-winner in wild OT finish over Toronto, 117-116

Isaiah Thomas shouldered the scoring load for Boston with 25 points on 10 of 19 shooting.
The Celtics topped the Raptors in Toronto, 117-116, after Marcus Smart's game-winning overtime lay-up.

The Raptors came out with better energy in the opening quarter, after which they led 24-15. Some complacency set in for the Raps and the Celtics wasted no time seizing the opportunity. Boston would own the second quarter 32-23, and the third quarter 34-23.

Things got close as the Raps started making noise in the fourth. After chipping away at the deficit, DeRozan drew a foul and hit both free throws to tie it up at 100 apiece. Evan Turner sank an acrobatic lay up on the following play, giving the Celtics a two-point lead. DeRozan was quick to tie it again with a strong drive but Turner (of course) matched with a clutch mid-range jumper.

DeRozan continued the spectacle by tying it yet again with only 6.9 seconds to go. Isaiah Thomas launched a three to win it, but missed wide.

Led by DeRozan, the Raptors commanded the lead for most of the extra period. Marcus Smart hit a huge three with just 32.9 seconds left to give Boston the 114-113 lead. Bass would extend the lead by a point after hitting 1 of 2 at the line.

With only 4 seconds on the clock, DeRozan dished it out to Lou Williams who drained a three to take the lead, 116-115. Isaiah Thomas drove the lane and threw it up for Marcus Smart to find and get it back up to beat the buzzer. Smart's lay-in capped a crazy finish to earn the Celtics the win:

For the Celtics, Evan Turner filled the stat sheet with 18 points (9-17 from the field), 10 assists, 6 rebounds and 3 steals. Tyler Zeller finished with 20 points (8-10), 9 rebounds and three assists. Isaiah Thomas came off the bench for 25 points (10-18) and 3 assists.

Tyler Hansborough was effective for Toronto, posting 18 points (5-5 from the field, 8-8 at the line), 8 rebounds, 2 steals and a block. Jonas Valanciunas was a beast on the boards, tallying 14 to go with 12 points (5-12).

DeMar DeRozan showcased his adept scoring abilities to the tune of 38 points (14-25), 3 assists and a steal. Lou Williams led the bench effort with 24 points (8-15), 4 assists, 2 rebounds and a steal.

Here's a look at the final box score for Boston:

The Celtics (35-42) take on the Pistons (30-47) at 7:00 ET on Wednesday, April 8 in Detroit.

Photo courtesy of Chris Young of AP Photo/The Canadian Press