Williams is out to defend the crown he has won two seasons running, his 2015-16 and 16-17 premiership titles were his first since he formally cut ties with David Hayes, with whom he bagged his first four metro titles in Melbourne earlier in the 2000s.
However, that doesn't stop Hayes and Williams from continuing to combine in this era, and they did so again on Saturday as Williams dutifully partnered topweight Miss Gunpowder to victory in the Leilani Series Final (1400m).
Hayes knows well-and-truly how good Williams is when he has his eye on the overall prize.
"He gets into the zone doesn't he?" Hayes said.
"He works hard at getting onto the right horses. You want him on at this time of the year."
Williams delivered for favourite backers in the opening two events, with Mintha ($2.80) and Sixties Groove ($1.65) - the star hoop not just winning either, the race-to-race treble that also featured Miss Gunpowder coming by a collective seven lengths. Overall, Williams' six winners were a shade under nine lengths.
McEvoy, trainer of Mintha, said: "I've got to commend Craig. He's such a professional.
"As soon as noms came out, he was straight on the phone to me - he never rings me.
"He said, 'I want to ride your two horses today. I think they're the best chances in those races. I'm trying to win this premiership. Can I ride them?' I said, 'yes of course'.
Williams' sextet saw him increase his lead on his rivals in terms of the premiership, and was a huge push to see him reach double-figures in city winners in a month - which he has done an astounding 11 times in the past decade, especially when you factor in his big-race commitments in other jurisdictions that he always takes up.
After Saturday, he's already up to nine city winners in July in just two meetings - having ridden a treble in mid-week.
Damian Lane, Williams' closest rival in the premiership standings, not only had no luck in the Taj Rossi aboard Inkslinger for trainer Brian McGrath, he was very nearly unseated - and it took some fine balance and poise for Lane to avoid a fall in the home straight.
Deny Williams once though, and fear him in another battle moments later.
Lane would certainly have been thankful he had the ride on boom horse Nature Strip to get one back on the board when he did, and he carried the weight and hopes of the punting fraternity to an easy-watch victory.
"It's obviously a big break [Williams' lead] at this time of year - if it [the premiership] wasn't in the back of my mind before, it certainly is now," Lane said.
"We'll see what we can do."
