Simplify the following text for a Grade 5 native English-speaking person.
Original: In 1937 â `` 38 , his final full season with the Bruins , he won 30 out of the 48 games , but Boston lost to the Maple Leafs once again in the playoffs .
Simplified: In the 1937 â `` 38 , Thompson played his last entire season with the Bruins . He won 30 out of the 48 games , but Boston lost to the Maple Leafs once again in the playoffs .