For the second time in three years, Novak Djokovic went a remarkable 27-1 on the Grand Slam stage.

The Serbian turned 36 in May and showed no signs of slowing down on his way to securing a men’s record-setting 24 major titles and reclaiming the No. 1 ranking.

Djokovic’s trophy haul at the four biggest events this season wasn’t a scenario everyone saw coming, including chief rival Rafael Nadal.

“I imagined Djokovic winning a Grand Slam but I didn’t imagine him winning three because I think there is another young generation that is very powerful,” Nadal stated in a translated interview with EFE.

He added, “In the end we all know that Djokovic is what he is and that he has achieved something historic, something that had never been achieved before and all that remains is to congratulate him and in the end he has not surprised me either.”