Eagles coach Chip Kelly said Monday he hasn't made a decision on who will start at quarterback against the Buccaneers. On Sunday, after his team defeated the New York Giants, he said Vick was still the starting quarterback when he's healthy.
"I don't know if he'll play Sunday. Right now he's day to day. We'll see how he goes through the rehab process," Kelly said Monday.
Vick tweaked his injury late in the second quarter on a run around the left end -- his seventh carry of the game, including several designed sweeps.
"I'm just running by myself, just running out of bounds," Vick said Sunday. "I tried to slow down. I think I just took the wrong step."
He had an MRI on the hamstring Monday. Kelly said he didn't have the result of the exam.
Backup Nick Foles replaced Vick on Sunday and threw two fourth-quarter touchdown passes in Philadelphia's 36-21 victory.
Kelly was asked Monday if Foles can win the starting quarterback job if he starts for Vick against the Buccaneers and performs well.
"Can [Foles] win the starting job? If Nick goes out there and goes 100 for 100 ... sure," he said.
"If somebody comes in and puts on an unbelievable performance, you have to take it all into account. If Nick plays this week and does an outstanding job, that will be great for everybody."
Vick finished Sunday's game against the Giants with seven carries for 79 yards. He wasn't as successful in the passing game, completing just 6 of 14 for 104 yards.
Foles came in with 1:25 left in the second quarter and took the Eagles from their 7 to the Giants' 18, and Alex Henery kicked a 36-yard field goal as the half ended, pushing Philadephia's lead to 19-7. Foles completed 7 of 8 passes on the drive for 68 yards.
For the game, Foles was 16-of-25 passing for 197 yards and two touchdowns. He was sacked just once, and his passer rating was 114.9.
Vick won the starting job in a preseason competition with Foles. Kelly said he didn't want Vick looking over his shoulder once he was named the No. 1 quarterback. But injuries limited Vick to 23 starts in 2011 and 2012 combined.
ESPN NFL Insider Adam Schefter and ESPN.com Eagles reporter Phil Sheridan contributed to this report.