Raptors' rookie sensation Scottie Barnes left his playoff debut in the 4th quarter tonight after suffering an apparent left ankle inversion sprain.Barnes went down attempting to launch for a block when Joel Embiid stepped on his left foot, trapping the base of his foot and causing the ankle to turn awkwardly.Head coach Nick Nurse told reporters after the game that x-rays were negative, as expected, and he will undergo an MRI to determine the severity of the sprain tomorrow.According to our team of ProBasketballDocs, because Barnes has not suffered any previously noted ankle sprains this injury created significant new damage and will cause an extended absence. Expect the do-it-all rookie to miss multiple games, if not the entire series.The 20-year-old is an active player on both sides of the ball, meaning it is harder for him to recover from, and play through, the damage and what will likely be notable swelling in the coming days. Toronto lost the contest to the 76ers, 131-111, and play again in Philadelphia on Monday before heading back to Toronto next Wednesday. Barnes, drafted No. 4 overall out of Florida State, averaged 15.3 points, 7.5 rebounds, 3.5 assists, and 1.1 steals in 35.4 minutes per game this season, making a strong case to win Rookie Of The Year. He played in 74 games this year, missing time with a thumb sprain, COVID-19, and right knee tendinitis.