Antonio Cromartie isn’t hurting for confidence.

Cromartie, the Cardinals cornerback who recently declared that the two best cornerbacks in the NFL are himself and his old Jets teammate Darrelle Revis, is mocking those who say he’s not quite the same player at age 30 as he was a few years ago.

Cromartie posted a video on Instagram that he says shows him running a 4.34-second 40-yard dash at the end of a workout, and with that video he posted a message scoffing at anyone who thinks he’s slowing down.