Kostyuk and Stearns came to set with furry friends, while Fils, Dimitrov and Djokovic brought out big grins.
Grigor Dimitrov has not recovered well from his injury; he tried today, but Alcaraz was a very difficult challenge for him.
Elena Rybakina's strong run through the WTA Finals continues. She'll face world No. 1 Aryna Sabalenka in Saturday's championship match.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results