Nope, would've been impossible to have a round robin then. And every "all elite" tourney must've RR system. That's how you eliminate the "luck of draw" or whatever. Like the WTA finale where WS in RR format but WD is straightaway best of 8 which makes it as good as any other normal tourney in WD case. A player may find one as an easier opp as compared to others you know.