CORTLAND, N.Y. - Mark Sanchez could very well win the Jets starting quarterback job by default.

With Geno Smith's early exit from Friday night's preseason loss in Detroit - and the uncertainty surrounding the rookie's right ankle - the competition between these two quarterbacks could end sooner than many expected.

Smith - who rolled his ankle while trying to scramble to his left early in the third quarter of a 26-17 loss to the Lions - downplayed the pain and insists he'd do everything in his power to get back on the practice field and into Saturday's preseason game against Jacksonville.

But the always-confident Smith (5 for 6, 47 yards, no touchdowns) was forced to admit there's no way to tell if his injury will be a major setback in his quest to beat out Sanchez.

"Being able to go out there and get reps in practice, I don't know how that'll go," he said after Friday night's game, adding that an X-ray revealed "no breaks, no fractures or anything, so everything should be good" with his ankle.

Extra points

• Jaguars coach Gus Bradley had receiver Justin Blackmon and defensive end Jason Babin in his office Saturday morning, hours after the two got into it on the sideline during the team's preseason opener.

"I'm not going to say that there was (nothing) between Justin and Jason Babin, but … it was a lot smaller than what I initially thought."

• Chargers rookie linebacker Manti Te'o will sit out this week with a sprained right foot and miss San Diego's game at Chicago on Thursday.

• Bengals receiver Andrew Hawkins will wear a cast for 10 days to try to heal his sprained left ankle, making it doubtful he'll be ready for the season opener.