T.J. Warren has sustained a small crack in a bone in his left thumb and will be treated with a splint and rest, the Phoenix Suns announced on Thursday.
There is no timetable for Warren's return.
Warren, a rookie from North Carolina State, was selected by the Suns with the 14th overall pick in the 2014 NBA Draft. He has averaged 5.0 points and 12.2 minutes in five preseason appearances.