"You start all over again".
"People might say, "oh, you've got it great" - which I'm aware that we do, and I'm very lucky I get to play tennis for a living".
"I'm pushing myself to get better and better every single match".
The Swiss No 2 is still on the mend after suffering a knee injury a year ago that required two surgeries.
Nishikori survives opening grass test in Halle Japan's Kei Nishikori had to fight through a tiebreaker to start his grass season with a win yesterday as he beat Matthias Bachinger in the ATP Halle tournament. Every day it's getting better, and in general, I'm happy with my level, with the way I'm doing on the court. The knee feels good, for sure. Rybarikova's versatility and shot-making fluidity enabled her to control the match nearly from start to finish.
'I need to be really patient with myself, to accept less in a way, because when you win Grand Slam and especially me, I always expect so much from myself and always push myself to the maximum and never really happy with what I'm doing, so when you be out on the tour so long, you need to a little bit put your expectation a little bit lower and accept that, because it takes time.
The American's big-serving game is suited to the grass and he proved too good for the wildcard, winning 6-3 6-3.
Former US Open champion Cilic is bidding for a second Queen's title and a fourth appearance in the final after losing last year's title match against Feliciano Lopez.
Djokovic plays Australian qualifier John Millman and Murray will make his first appearance for 11 months after finally recovering from a hip injury that needed surgery in January.