Collins beats Mertens, returns to Australian Open quarters

Danielle Collins of the U.S. makes a forehand return to Elise Mertens of Belgium during their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Monday, Jan. 24, 2022. (AP Photo/Andy Brownbill)

Danielle Collins of the U.S. reacts after winning a point against Elise Mertens of Belgium during their fourth round match at the Australian Open tennis championships in Melbourne, Australia, local time on Monday. (AP Photo/Andy Brownbill)

MELBOURNE, Australia — Danielle Collins is back in the Australian Open quarterfinals after a 4-6, 6-4, 6-4 comeback win over No. 19-seeded Elise Mertens in a match lasting almost three hours Monday in temperatures in the low 90s on Rod Laver Arena.