My son sure does know how to make an entrance! 2/5/15... Is it a coincidence or is he just that clever?! Either way I'm ecstatic— Richard Sherman (@RSherman_25) February 5, 2015
Sherman's jersey number is 25.
The baby's arrival -- and Sherman's participation -- had been a hot topic before Super Bowl XLIX as his girlfriend, Ashley Moss, was in Arizona for the game.
Before the game, Sherman said that "we'll cross that bridge when we get to it, but I think he will be a disciplined young man and stay in there a while longer."
Peter King of MMQB.com reported that Sherman's son has been named Rayden. That may disappoint Seahawks coach Pete Carroll, who joked before the Super Bowl that he "can't wait to see little Petey."
Seahawks quarterback Russell Wilson offered his congratulations -- and babysitting help -- on Twitter.
@RSherman_25 so happy for you bud!!! You are going to be an amazing dad! Love you bro! Let me make if u need me to babysit! 😉— Russell Wilson (@DangeRussWilson) February 5, 2015