Fifa president Gianni Infantino had already said that he was determined to push ahead with plans to expand the World Cup in time for the next tournament after hailing France 2019 as 'the best ever'.
CAF last month ordered the second leg to be replayed at a neutral venue following the Africa Cup of Nations after Moroccan side Wydad walked off an hour into the return fixture in Tunis.
Eighth-ranked Stephens, the 2017 US Open champion, lost to Sweden's Rebecca Peterson 6-2, 7-5 while 15-year-old qualifier Gauff fell to Kazakhstan's 84th-ranked Zarina Diyas 6-4, 6-2.
Bailly, 25, hurt his knee in last Thursday’s 2-1 win against Tottenham Hotspur in the International Champions Cup (ICC) and had successful surgery on Tuesday.