Aldon Smith was among several players preparing for the Super Bowl who doesn't see anything wrong with their kids playing football.
Responding to President Obama's comments questioning the safety of the game, the 49ers' All-Pro linebacker and a few teammates said they'd allow their sons to follow them into the sport.
''It's not like we signed up and thought we were going to play tennis,'' Smith said Monday. ''It's a physical game. Everybody plays hard. And guys get hit sometimes. That's what we all know coming into the game. We all signed up for it.
''We came out to play football.''
Guard Alex Boone was adamant that football has to be ''physical,'' while adding he believed the league and the players association were attempting to make the game safer.
''If he wants to play, he can play. He can do whatever he wants,'' Boone said of having a son pursue footballs. ''With little kids, you don't really have to worry about them that much. But as you get older, you have to understand t...