The Sharks recalled forwards Devin Setoguchi and Lukas Kaspar from their AHL affiliate in Worcester.
Clowe has three goals, three assists and 20 penalty minutes in 11 games with the Sharks this season. He had an assist on Joe Thornton's goal in San Jose's 2-1 loss at Columbus on Saturday night, but was diagnosed with a knee injury afterward, and the Sharks didn't immediately announce a timetable for his return.
Davison sprained a finger on his left hand during a fight with Detroit's Aaron Downey on Friday night. The reserve defenceman is scoreless in five games.
Setoguchi, the former No. 8 overall draft pick, could make his NHL debut Monday night at Dallas. Setoguchi made the Sharks' roster out of training camp, but injured his ankle and was sent to Worcester before playing a game with San Jose.
Kaspar, a first-round pick in 2004, has two points in six games with Worcester.