"The Dolphins are slim favorites to beat the Denver Broncos in the winless team's return to Sun Life Stadium on Sunday, but after the oddsmakers take a look at Miami's injury report that might change.

The Dolphins began preparation for Tim Tebow's first start of the 2011 season without three starters, who are all nursing injuries. And two of them are the focal points of Miami's offense.

Receiver Brandon Marshall, who leads the team with 28 receptions for 422 yards and one touchdown, sat out practice with a quadriceps injury. If he doesn't practice on Thursday, Marshall could miss Sunday's game against his former team.

Also sidelined was tailback Reggie Bush, who gained 71 yards on 10 carries in Monday night's 24-6 loss to the Jets."