"I’m walking. I’m straight," Brown told reporters as he slowly walked by them with a slightly noticeable limp.
Brown had tests immediately after the game, coach Bruce Arians said.
"We’ll have to wait and see," Arians added. "It appears it’s not as serious as it looked."
Brown caught four of five targets -- the second-most receptions for him in a game -- for 35 yards in Arizona’s 28-3 win against the Jets on Monday. His role has increased in recent weeks as Michael Floyd's production has decreased.
Brown has found a niche in Arizona’s offense since signing as an undrafted free agent in 2013. Of his 55 career receptions, 22 have come on third down. Of those 22, he’s converted 16 into first downs.
With Floyd struggling this season, losing Brown could weaken Arizona’s already thin wide receiver rotation.