My nephew looks like soccer star Landon Donovan

Don't you think so?
My nephew is on the left, the football dude on the right.

Adidas soccer ball

What's the NFL rule on this?

OKay, a defensive lineman jumps offsides and the referee throws a penalty flag - sometimes the play is stopped, and sometimes the quarterback gets a "free play" and will usually throw the ball deep. Why the different calls? Have always wondered . . .