Rafael Nadal will turn 36 in a month and a half, and he is still among the world’s best players. The 21-time Major champion leads this year’s ATP Race after winning 20 out of 21 matches and securing a notable trophy at the Australian Open.The Spaniard was among the players to beat in 2018 following a Major crown and three Masters 1000 trophies. Still, Rafa struggled to stay injury-free and play as many tournaments as he wanted. Winning 45 out of 49 matches that year, Nadal skipped the last part of the season following the US Open an …