AO doubles

MELBOURNE, Australia — Elise Mertens marked her return to the No. 1 ranking in women’s doubles by combining with China’s Zhang Shuai to win the Australian Open title on Saturday.

Back together after four years apart as a team, Mertens and Zhang trailed 3-0 and 4-1 in the first set but rallied to beat Anna Danilina of Kazakhstan and Serbia’s Aleksandra Krunic 7-6 (4), 6-4. Mertens and Zhang led the final set 5-0 before withstanding a comeback attempt when Danilina and Krunic won four straight games.