Rising Danish star Holger Rune said it was inspiring to be able to meet 20-time Grand Slam champion in a real competitive match. Rune, 18, practiced with world No. 1 Djokovic in Monte Carlo before the two met in an official match at the US Open. Rune performed extremely well in his first match against Djokovic as he even managed to take a set off the 20-time Grand Slam champion. Unfortunately for Rune, he was left out of energy after winning a tight second set as Djokovic won 6-1 6-7 (5) 6-2 6-1. “What was it like to fa …