Carlos Alcaraz had to postpone his first semifinal at the Australian Open once again. The Happy Slam is a tournament that has not brought him great luck so far and in which he struggles to play his best tennis.

Alcaraz and Djokovic are highlight reels and attention magnets. When they play each other, every ounce of energy is on the task at hand

MELBOURNE, Australia -- It's time for the eighth installment of the riveting, intergenerational rivalry between Novak Djokovic and Carlos Alcaraz. This one, though, will be the first at the Australian Open — and the first in the quarterfinals of a tournament; each of the others came in either a semifinal or final.