The world number one opens his defense against Alexander Bublik, a lucky loser ranked 134, on Centre Court in front of his home fans on Monday.
"This is the only Grand Slam that I haven't done well in", Nishikori said. "In the first few days, normally the court is a bit lush and can be a bit slippery, but I didn't feel like I was losing my footing at all".
"Like Andy, I'd like to think that I'm fit enough to play seven matches, but I'm going to be taking it one at a time".
Murray has won 21 matches this year and lost nine, but six of those have been to players outside the top 10: Jordan Thompson (90), Fabio Fognini (29), Borna Coric (59), Albert Ramos Viñolas (29), Vasek Pospisil (129) and Mischa Zverev (50), who began the slide in the first week of the Australian Open.
The 30-year-old was forced to cancel two exhibition matches at the Hurlingham Club last week but managed three practice sessions on Saturday before hitting with world No11 Grigor Dimitrov on Sunday morning.
"To give myself the best chance for the grass, so I would never look back and have regrets once I came here". "It has been slightly stop-start preparation but each day it has got better". "I'm hoping that's the case here".More news: Ready for Prime Day? Amazon Prime membership is £59 until midnight tonight
"For sure, he had some years (that were) a little bit down - with some injury, with some tough results for him. I don't even know what I'm going to do", says Bublik about his game.
"Perhaps it adds a little bit extra pressure, especially as you're the first one out there on Centre Court". I never got it right. However, they loved how Murray played too.
Murray is owed the respect of a champion and conviction runs through his assertion on the eve of his opening match.
"We all know as players, we all see on the court, we all see when we practice against him", said Wawrinka, who is friends with Federer and has teamed with him to win a Davis Cup title and an Olympic gold in doubles.
"You want to make the most of every tournament you play".
Croatian seventh seed Marin Cilic defeated Germany's Philipp Kohlschreiber 6-4, 6-2, 6-3 and Japan's Kei Nishikori overcame Marco Cecchinato of Italy 6-2, 6-2, 6-0. "But I'm not interested in discussing the dates of that in here", he said. View image | gettyimages.com Murray won the toss but elected to receive first up, meaning he was always serving to stay in the match.