LOREN ELLIOTT | Times
SAN FRANCISCO — The Bucs will face the 49ers on Sunday without starting DT Clinton McDonald, who was ruled out Friday after returning to practice for two days in a limited capacity as he recovers from a hamstring injury.
Also ruled out were RB Doug Martin (hamstring) and DE Robert Ayers (ankle), who will both miss their fourth straight game with injuries suffered in Week 2. Neither has practiced all week. McDonald misses his second straight game, so backup Akeem Spence will start as he did in last week's win against Carolina.