Complex sentence: The vast majority of home runs occur when the batter hits the ball beyond the outfield fence on the fly; this is purely a feat of hitting with power, along with a fortuitous flight angle of the ball.
Split into simpler sentences: The vast majority of home runs occur when the batter hits the ball beyond the outfield fence on the fly. This is purely a feat of hitting with power, along with a fortuitous flight angle of the ball.