Her 2018 started with a couple of big jolts and early shocks, and between necessity and practicality, perhaps, it was her old coach Conchita Martinez - the former World No 1 and the coach of the Spanish Davis Cup team, herself an Australian Open finalist, that Muguruza turned to for help past year.
"He's a fighter and I wish him all the best".
Djokovic, though, was not to be denied a 900th ATP career victory and the Serb star told reporters: "I actually like tough first rounds in grand slams particularly".
Dominic Thiem wants to make the step up to Grand Slam title contender at the Australian Open - and he believes he recent wins over Roger Federer and Novak Djokovic will do just that.
"If I'm being totally honest I had a real bad mental performance last time", Evans said.
The ninth seed, a quarter-finalist in Melbourne previous year, had to wait overnight to claim victory as heavy rain suspended the clash at 1-2 in the second set. "I just trying to do the things I know I could do, and just tried to put myself on rhythm".
Play got underway early on the second day on the outside courts after a number of matches were suspended on day one due to torrential rain in Melbourne.
"Of course, I want to do it the best way possible because that's what I am doing since the beginning of my life nearly". I just care about try to keep going, keep enjoying my tennis career.
"So, I don't care about 20 or 15 or 16 (Grand Slam titles)".
The sparkling Spaniard was in imperious form to sweep past a Bolivian making his Australian Open debut 6-2, 6-3, 6-0 on Rod Laver Arena in barely two hours.
He clubbed 38 winners and made only 21 unforced errors against Dellien.
France's Jo-Wilfried Tsonga, the 2008 runner-up, was forced to retire from his match against Alexei Popyrin due to an injury while trailing the Australian 6-7 (5-7) 6-2 6-1.
"If I broke it, give me a code, 100 percent".
"I just haven't played proper matches in many, many weeks, and a lot of guys, probably 95 per cent of the guys, are coming here with matches", he said. "I think today really showed what I worked on in my offseason".
Elsewhere, diminutive Argentinian 14th seed Diego Schwartzman cruised past South African Lloyd Harris with a 6-4 6-2 6-2 win, while Italian teen sensation Jannik Sinner outgunned Australian qualifier Max Purcell 7-6 (7-2) 6-2 6-4.
Unseeded American Sam Querrey knocked out 25th seed Borna Coric of Croatia 6-3 6-4 6-4 and was joined in the second round by eighth seed Matteo Berrettini, who beat Australian wild card Andrew Harris 6-3 6-1 6-3 for his first Australian Open win.
"It's always nice to get a win", he added.