Complex sentence: John "Hopper" Hopkins (born May 22,1983) is an American motorcycle racer in the British Superbike Championship (BSB) as well as previously in MotoGP, AMA Superbike Championship, and Superbike World Championship.
Split into simpler sentences: John "Hopper" Hopkins (born May 22,1983) is an American motorcycle racer currently racing in the British Superbike Championship (BSB). Hopkins has raced previously in MotoGP, AMA Superbike Championship, and Superbike World Championship.