Complex sentence: Their central position enables them to have an all-round view of the match, and as most of the action takes place in and around their area of the pitch, midfielders often exert the greatest degree of control over how a match is played.
Split into simpler sentences: Their central position enables them to have an all-round view of the match. Since most of the action takes place in and around their area of the pitch, midfielders often exert the greatest degree of control over how a match is played.