Phoenix Suns big man Frank Kaminsky has been diagnosed with a stress reaction in his right knee and will be out indefinitely, the team announced Sunday.

Kaminsky had missed the last two games after logging just under four minutes in the Suns' victory over Minnesota last week.

A key depth piece for the Suns, Kaminsky had played well during Deandre Ayton's absence earlier this season, including a career-high 31-point performance in a win over the Trail Blazers on Nov. 10.

Kaminsky is averaging 10.6 points per game on 54.5% from the field to go along with 4.6 rebounds per game this season.