Byron Leftwich, QB JACNews: Jaguars QB Byron Leftwich missed practice Friday and was scheduled to have tests on his sore left ankle, the same one that caused him to miss five games last season. Leftwich was added to the team's injury report and listed as questionable for Sunday's game at Houston. He took his normal practice repetitions Wednesday and Thursday, but coach Jack Del Rio said he experienced soreness in his ankle Friday morning. Leftwich did not attend the workout and was not available for comment. Del Rio said Leftwich would have an MRI later on Friday. "Any time your starting quarterback misses time, there's a concern," Del Rio said, adding that he will try to get backups David Garrard and Quinn Gray ready if needed. Leftwich fractured a bone in his left ankle last season and missed the final five games. He returned for Jacksonville's first-round playoff game at New England, but was clearly rusty. Team officials were unsure whether Leftwich's soreness was related to last year's injury. Analysis: Leftwich has a perfect matchup Sunday playing against the Texans, but now it seems his status is in jeporady. We will probably know a lot more once the results from the MRI come back, until then, just sit tight and try to relax. There is no need to rush out and pick up Garrard just yet.