Complex sentence: Shawn and Harvey leave after Evan and Shawn nearly get into a fight that Shawn was kicked off the wrestling team by his father and that Evan was the star wrestler that his father treated like a son.
Split into simpler sentences: Shawn and Harvey leave after Evan and Shawn nearly get into a fight. It is later revealed that Shawn was kicked off the wrestling team by his father and that Evan was the star wrestler that his father treated like a son.