Canadian tennis star Denis Shapovalov didn’t want to celebrate too much after upsetting Rafael Nadal as he acknowledged that the Spaniard was clearly struggling with something. On Thursday night in Rome, Shapovalov recovered from a set down to stun 10-time Rome champion Nadal 1-6 7-5 6-2. It was the sixth meeting between the two and Shapovalov’s second win over Nadal. After easily winning the first set, Nadal started struggling in the second set and, even though he started the third set with a break, he ended up losing easily the decider. In his post-match press conference, …