MIAMI - Aryna Sabalenka, back on court for the second time in as many days following the apparent suicide of former boyfriend Konstantin Koltsov, had a difficult and emotional week come to an end on Saturday with a 6-4 1-6 6-1 loss to Anhelina Kalinina.

After a gutsy second round win on Friday over good friend Paula Badosa the world number two appeared to have little left in the tank physically, mentally or emotionally for a late night Stadium court battle with Ukrainian Kalinina.