Simplify the following text for a Grade 3 native English-speaking person.
Original: He won only 13 games while appearing in 43 out of Boston 's 48 games , which was the only time he missed games as a member of the Bruins .
Simplified: He missed five games during that season , which was the only time that happened to him . In the 43 games he played , Thompson won only 13 .