Simplify the following text for a Grade 7 native English-speaking person.
Original: Second base , or 2B , is the second of four stations on a baseball diamond which must be touched in succession by a base runner in order to score a run for that player 's team .
Simplified: Second base , or 2B , is the second of four places on a baseball field which must be touched in order by a base runner before he can score a run for that player 's team .