CLEVELAND — Cavaliers starting forward Evan Mobley will miss time with a sprained right ankle suffered during practice, an injury that could sideline him for the start of the regular season in two weeks.

Mobley injured his ankle during a workout on Saturday.

The team said Monday that a magnetic resonance imaging confirmed the injury and that the seven-footer will be out "approximately one to two weeks."

Mobley will miss Wednesday's exhibition game at Philadelphia. The Cavs have three preseason games next week before opening the season on 19 October in Toronto. Their home opener is set on 23 October.

The Cavs said Mobley is undergoing treatment and his "status will be updated as appropriate."

Cleveland's expecting big things this season from Mobley, who averaged 15.0 points, 8.3 rebounds and 1.7 blocks as a rookie. He added muscle during the offseason and worked on his perimeter game, adding a three-pointer to his arsenal.

Mobley finished second in Kia NBA Rookie of the Year voting to Toronto's Scottie Barnes.

Last week, Cavs coach J.B. Bickerstaff said Mobley is ready to take another step in his development.

"He has the ability to be a superstar without being the leading scorer on your team," Bickerstaff said at media day.

"He has an opportunity to be the best player on the floor without having to take the most shots. That's hard to find."

"He can stuff the stat sheet in every category, that's our expectation for him. We want him eventually — and hopefully it's this year — to be in the conversation for Defensive Player of the Year. We believe he has that type of ability and can have that type of impact on the floor."