Aryna Sabalenka overcomes a former champ and her own demons to advance at Australian Open

Aryna Sabalenka’s first-round match at the Australian Open was a test in more ways than one. 

Sabalenka, the two-time defending champion at Melbourne Park, overcame a tricky test against America’s Sloane Stephens, registering a 6-3, 6-2 win on the opening day of the tournament. 

Stephens may not…