PHILADELPHIA — If a 20-point loss at Philadelphia wasn’t painful enough, the Raptors lost prized rookie Scottie Barnes to an ankle injury, and saw all-star guard Fred VanVleet foul out of the game with almost a quarter still to play. Raptors coach Nick Nurse had predicted a slug-fest against Philly, and the Sixers obliged on Saturday. “I’m not surprised (the 76ers) were highly motivated and ready to go,” Nurse said. “I think there’s a lot of expectations on them. I think they were going to try to bully us right off the floor and deliver a blow to see if we’ll go away. Now we’re going to find out if we will or not.” Tyrese Maxey scored 21 of his playoff career-high 38 points in the third quarter Saturday to stuff any Raptors’ hopes of a comeback, and the 76ers beat Toronto 131-111 in Game 1 of the opening-round playoff series. Pascal Siakam had 24 points while OG Anunoby chipped in with 20 points on a rough night for the Raptors. Barnes had 15 points, 10 rebounds and eight ass...