Seattle ? The Seattle SuperSonics will be without forward Nick Collison for four weeks after he partially tore the plantar fascia in his left foot.

Collison was injured in the first half of Sunday night’s victory over Utah. After the game, Collison said he felt a sharp pain as he jumped for a ball. The Kansas University product left the arena wearing a protective boot on the foot, and had an MRI on Monday.

In his second full season, Collison has started 26 games for the Sonics and is averaging 7.0 points and 5.5 rebounds. He had started the last 11 games for Seattle.