After a strong showing at the Flyers' training camp, he was added to the team and made his NHL debut on 14 October 2016 away against the Los Angeles Kings. He recorded his first NHL point, an assist, in the same game. Provorov scored his first NHL goal on 23 November 2016 against Andrei Vasilevskiy of the Tampa Bay Lightning. At the end of the 2016–17 season, the Flyers awarded Provorov with the Barry Ashbee Trophy, which is given to the team's "outstanding defenseman" from the season. Provorov became only the third rookie defensemen to win the award for the Flyers, after Norm Barnes and teammate Shayne Gostisbehere (who had become the second just the year before). Overall, he finished the season with 30 points in 82 games.
