Sentence:  Scott Russell, who had sewn up the Yokohama 750cc Supersport championship earlier in the year, completed a <WSD>clean sweep</WSD> of the series races with his ninth victory in Miami. 
Meaning of the word marked with <WSD> tags:  The winning, by a person or team, of all the possible possible prizes, games, rounds or contests, etc in a competition, season or series.