Peyton Manning, on Thursday. (Tony Tribble / AP)

On the advice of doctors, Indianapolis Colts quarterback Peyton Manning will not practice this week and his status for the Colts’ opener Sunday “will likely be doubtful,” the team said in a statement.

Manning, who has not practiced or played since having surgery to correct a disk and nerve problem in his neck in May, lacks triceps strength and has some back soreness that worsened over the weekend, ESPN reported.

Manning will be evaluated by doctors and neurosurgeons this week; earlier reports indicated that no further surgery is planned

“As of now Peyton continues to deal with a complicated neurological recovery, the end date of which is unpredictable,” the team’s statement said .“As was stated at the outset, it serves no useful purpose to speculate about hypothetical outcomes. When and if there are concrete medical facts to report we will do so.”

Manning has never missed a start in his 13-year NFL career and holds the longest active streak (208 regular-season games; 19 playoff games). His former coach, Tony Dungy, has said that he’d have to be dead not to start aganst the Houston Texans, but signals about Manning’s status were mixed last week. Although he was taken off the physically-unable-to-perform list and cleared to practice on a limited basis, the Colts also lured veteran Kerry Collins out of retirement. The team cut Dan Orlovsky over the weekend.