TORONTO (AP) -- DeMar DeRozan scored 40 points and Jonas Valanciunas added a career-high 32 as the Toronto Raptors opened their season with a 109-91 victory over the Detroit Pistons on Wednesday night.
DeRozan made a career-high 17 field goals on 27 shots and was a perfect 6 for 6 from the free throw line, while Valanciunas was 10 for 15 from the field to go along with 11 rebounds. Valanciunas' previous career high was 31, also against the Pistons, on Jan. 12, 2015.
Tobias Harris had 22 points and Marcus Morris had 17 points and nine rebounds for the Pistons, who lost for the eighth time in their last 11 games against Toronto.
DeRozan broke Vince Carter's opening-night record of 39 points, set against the-then New Jersey Nets in 2003. Alvin Robertson is the only other Toronto player to record a 30-point opening-night game, in the franchise's first-ever game, also against New Jersey, in 1995.
Pascal Siakam, drafted 27th overall in June, became the first Toronto rookie to start a season opener since Valanciunas in 2012, and rose to the occasion, hauling in nine rebounds to go along with four points in 21 minutes.
Despite falling into a seven-point deficit 2:09 into the game, the Raptors went in front on a jumper by DeRozan with 6:47 to go in the first quarter and led the rest of the way.
DeRozan and Valanciunas steadied the ship in the opening quarter, driving to the basket and drawing fouls. They were a combined 13 for 13 from the free throw line and scored 15 and 10 points, respectively, as the Raptors took a 33-23 lead after one quarter.
While Detroit responded against Toronto's reserves in the second, drawing within four points early on through Morris, Valanciunas returned to the game and added another 11 points as the Raptors pulled into a 58-46 halftime lead.
DeRozan provided much of the fireworks in the third quarter, scoring 21 points as Toronto pulled away to lead 86-71 going into the final 12 minutes.
Pistons: C Andre Drummond took a hard elbow to the face from Valanciunas at the start of the game and remained down on the court. Detroit was forced to burn a full timeout, but Drummond returned to the court. . Henry Ellenson, Detroit's first-round draft pick last June (18th overall) went scoreless in two minutes of play, while second-round selection Michael Gbinije (49th overall), had two points in two minutes.
Raptors: C Lucas Nogueira (ankle) sat out. . DeRozan started his franchise-record eighth straight season opener, breaking a tie with Carter. . Kyle Lowry's basket with 3:58 remaining in the first quarter broke the monopoly of Valanciunas and DeRozan, who had scored all the points up to that point. . First-round draft pick Jakob Poeltl became the first Austrian to play in the NBA. He finished with two points in 13 minutes. . Oct. 26 is the earliest date that Toronto has ever had a home opener. . The Raptors are 13-9 on opening night and have won four straight.
OPENING DAY JITTERS
Despite presiding over his franchise-record sixth opening night for the Raptors, coach Dwane Casey admitted that nerves still get the better of him "Didn't sleep much last night," he said. "Yes, I still get excited."
Every fan at the Air Canada Centre was given a pair of 3D glasses. As the Raptors opened their season some of the players were jumping out of the Jumbotron to highlight some of the more spectacular plays from last season.
Pistons: Host Orlando on Friday in their home opener. Coach Stan Van Gundy is 6-1 against his former team since taking charge in Detroit.
Raptors: Host Cleveland on Friday in an early season rematch of last year's Eastern Conference Finals, won by the Cavaliers in six games.