Purdy explains hilarious viral moment after family picture

SANTA CLARA — Forty-five minutes before kickoff, 49ers quarterback Brock Purdy jogged over to the sideline to greet some of the closest people in his life. He took a quick break from warmups before the team's Week 15 win over the Arizona Cardinals at State Farm Stadium to hug family members and kiss his fiancée, Jenna. The game had special significance, as it was Purdy's first appearance as a professional in Arizona, where he grew up less than an hour's drive away. The moment captured on social media went viral, in large part because it appeared to show two distinct sides of Purdy. Purdy, 24, confirmed what everybody thought they saw was, indeed, happening. "Yeah," Purdy told NBC Sports Bay Area in an exclusive interview on "49ers Talk." "I saw it afterward and I was like, 'Man, I didn't realize I did that,' but it is true." The video showed Purdy smiling and taking a photo with his loved ones. But the moment he turned to go back onto the field, his face turned expressionless. "Obviously, we're in uniform getting ready to warm up and get ready for the game, and I stopped by and saw my family and showed some love," Purdy said. "And right after that, all right, now I'm...