The only certainty about the Buffalo Bills' quarterback situation Wednesday was that the starter, Tyrod Taylor, didn't practice because of a knee injury.
Everything beyond that was a mystery, including Taylor's status for Sunday's game against the Indianapolis Colts.
"There's no timetable," the coach said. "I'm not going to get into a timetable on if he practices, if he doesn't practice, what that means."
Asked whether he'd be comfortable starting Taylor — who injured his left knee in last Sunday's loss against the New England Patriots — if Taylor didn't practice the entire week, McDermott said, "We'll see. I mean, we'll take it one day at a time."
McDermott wouldn't even say whether rookie Nathan Peterman, who replaced Taylor in the fourth quarter, would start against the Colts if Taylor weren't available.
The closest the coach came to offering even a hint of insight on where Taylor stands for Sunday regarded how large a factor the quarterback's mobility would be in assessing his readiness.
"It’s certainly of consideration," McDermott said. "To say that it’s not wouldn’t be accurate. At the end of the day, though, it’s can he execute and play the position? Just like any other position."
Taylor wasn't made available to the media Wednesday. The outline of a brace on his left knee was visible under his long black pants.
Peterman and Joe Webb, who saw action last Sunday in Wildcat formation, both took snaps Wednesday. On his only pass attempt against the Patriots, Webb badly overthrew wide-open running back Travaris Cadet on what would have been a touchdown.
How tight-lipped was McDermott about his quarterback situation? The coach wouldn't discuss whether Webb would be running the scout-team offense in practice (the media isn't permitted to watch most of the session), although that has been his primary role during workouts.
"We'll see how that goes," McDermott said. "Both guys are going to work, and we'll go from there."
Wednesday, however, Peterman drew the largest crowd of reporters in the dressing room. He did his best to downplay any added incentive he might be feeling about the chance to make his second career start.
"It's really the same," Peterman said. "Even last week, even the week before that, even Week 1 of the season. Obviously, you're getting a little bit more reps than I have been, but you're just kind of approaching it the same way."
Peterman's first NFL start was a disaster. He became the first quarterback since the 1970 NFL-AFL merger to throw five first-half interceptions that set the tone for a 54-24 loss against the Los Angeles Chargers.
He showed a bit more competence against New England, completing six of 15 passes for 50 yards, but his play offered little sign that he has taken significant strides since the Los Angeles game.
Peterman insisted that his confidence has never wavered, even after the horrific showing in his first start.
"I think it's always stayed high," he said. "You get a lot of advice as a quarterback that that's the most valuable thing you have, is your confidence. It definitely helped to get out there again (last Sunday) and kind of be able to complete some balls and things like that this past game, but my confidence has always stayed high."
Peterman said he has greater comfort with the offense.
"I think every rep you get more comfortable," he said. "I feel like I'm getting a better rhythm, with my feet, not having to rush things or anything like that."