Colts coach Chuck Pagano says tests found no significant ligament damage in Darrius Heyward-Bey's sprained left knee and he is listed as day-to-day.

The receiver has not practiced since he was injured Sunday at training camp. He had a brace on the knee Monday and was walking gingerly without crutches.

Pagano said Tuesday that an MRI test confirmed the good news.

The Colts also have signed fullback Robert Hughes, who played five games with Indy last season.