Complex sentence: His career was checkered by controversy from his hard-hitting style of play and occasional verbal outbursts, both on the field and off, some of which resulted in fines by the league, and he was once ejected from a game for unsportsmanlike conduct.
Split into simpler sentences: His career was checkered by controversy from his hard-hitting style of play and occasional verbal outbursts, both on the field and off. Some of these resulted in fines by the league, and he was once ejected from a game for unsportsmanlike conduct.