Power-serving pair John Isner and Milos Raonic have advanced to the second week of the Australian Open at Melbourne Park.

The 10th-seeded Isner recovered from a set down to defeat Spanish 18th seed Feliciano Lopez 6-7 (8-10) 7-6 (7-5) 6-2 6-4 in a high-speed serving shootout on Saturday at Hisense Arena.

Isner and Lopez entered the third-round contest as the tournament’s top two on the ace leaderboard and the American came out well on top to progress to the fourth round after two hours and 53 minutes.

Isner crunched 44 aces in total to take his Open tally to 101 and set up a clash on Monday with Spanish eighth seed David Ferrer or countryman Steve Johnson.

Earlier, 13th seed Raonic cruised into the last 16 with a straight-sets win over Serb Viktor Troicki, the Canadian dedicating the win to the four victims of the shooting tragedy in Saskatchewan.

Raonic didn’t face a single break point on his serve as he breezed through the first two sets on Margaret Court Arena but had to fight back from an early break in the third to record the 6-2 6-3 6-4 win.

Raonic will face Swiss fourth seed Stan Wawrinka, the 2014 champion, or unseeded Czech Lukas Rosol on Monday in the fourth round.