Broncos fans booed when Chad Kelly was replaced by Paxton Lynch in the fourth quarter of a preseason game against the Bears on Saturday evening.

On Sunday morning, former defensive back Ray Crockett asked fans on Twitter not to boo the former first-round pick.

Crockett played eight years in Denver, winning a pair of Super Bowls. Crockett admitted that Lynch’s performance hasn’t been good enough but said it’s not fair to assume the QB hasn’t put in enough effort.

“I feel bad for Paxton, but our fans want to win,” coach Vance Joseph said after the game, a 24-23 loss at home. “That’s what it’s about — it’s about passion.

“I feel bad for Paxton, but he has to ignore it and go play. It’s professional football, no one is going to hold your hand. He has to go out there and perform.”

Lynch’s chances of making the 53-man roster appear to be slim.