MELBOURNE, Australia — One of them has operated with ruthless efficiency, the other has brought the drama. But Carlos Alcaraz and Novak Djokovic have performed the opposite roles en route to their hotly anticipated Australian Open quarterfinal, which will be played Tuesday January 21 in Melbourne.

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.

Carlos Alcaraz reached his second Australian Open quarter-final after injury-hampered opponent Jack Draper retired while trailing 7-5 6-1 on Sunday. Third seed Alcaraz was well on top in the afternoon