Simplify the following text for a Grade 12 native English-speaking person.
Original: Rajon Pierre Rondo ( born February 22 , 1986 ) is an American professional basketball player who plays point guard for the Boston Celtics of the National Basketball Association ( NBA ) .
Simplified: Rajon Pierre Rondo ( born February 22 , 1986 in Louisville , Kentucky ) is an American basketball player that currently plays for the Boston Celtics of the NBA as a point guard .