PORTLAND, Maine -- It took Jeff Green a mere 15 seconds to remind us what he's capable of on the court.

Green, who missed the team's first four exhibition games while battling a strained left calf, made his preseason debut Wednesday and, on the game's first possession, rolled free on a pick-and-roll with Evan Turner and delivered a two-handed slam.

With maybe a touch of rust to blame, Green had more downs than ups from there. He finished with nine points, five rebounds, a steal and an assist, while also committing three turnovers over 32 minutes of action as the Celtics fell to the Toronto Raptors 92-89 on Wednesday night at the Cross Insurance Arena.

The Celtics, who trailed by as much as 12 in the game, rallied to make things interesting late and Avery Bradley hit a jumper with 8.1 seconds remaining to tie the game. Toronto responded with Lou Williams calmly knocking down a 3-pointer with 0.6 seconds to go. Jared Sullinger's attempt to tie the game at the buzzer bounced off the rim.

The rest of what you need to know from Wednesday's game:

• Nitty Gritty: Marcus Thornton got it going into the fourth quarter and scored a team-high 17 points on 6-of-9 shooting, while Tyler Zeller had a strong first half to help fuel a 13-point outing (he was also a team-best plus-12 on the night). Toronto got a team-high 16 points from Jordan Hamilton and 15 more from Williams.

• ET ejected: Evan Turner got tagged with a pair of technical fouls for barking at referee Eric Lewis and was ejected with 2:09 to play in the third quarter. In a whistle-heavy game, Turner didn't seem to be protesting much more than others, but he got the gate for voicing his displeasure.

• Loose balls: The Celtics shot 41 percent overall (34-of-83) and just 26.7 percent beyond the 3-point arc (8-of-30). ... After the Raptors dominated points in the paint early, Boston tightened up and narrowed the difference to 34-32 by game's end.

• What it means: The Celtics fall to 2-3 on the preseason. Boston is off to Philadelphia for the second night of a back-to-back against the Philadelphia 76ers at the Wells Fargo Center. The Celtics will spend a couple days in Brooklyn before a 44-minute test game against the Nets on Sunday at the Barclays Center.