Jannik Sinner

MELBOURNE, Australia — Jannik Sinner was limping and trying to stretch out cramps in his arms and legs, and had just gone down a break in the third set when the extreme heat rules kicked in at the Australian Open.

Play was suspended for several minutes while the roof was closed on Rod Laver Arena on Saturday afternoon, and the two-time defending Australian Open champion returned a revitalized man.

He won five of the next six games to take the third set against No. 85-ranked Eliot Spizzirri enroute to a 4-6...