The league's top goalscorer, Roy Krishna, was suspended, while only two of the Phoenix's imports made the starting XI, with Steven Taylor and Michal Kopczynski failing late fitness tests, and Cillian Sheridan named on the bench.
In the past, that probably would have been a destruction of depth too much for the hosts to overcome, but the Phoenix have a bit more about them this season – a fact that was shown within 30 seconds, when Williams spectacularly opened the scoring.
Played in on goal from the returning Sarpreet Singh after a sweeping move, Williams guided a classy finish past advancing Jets goalkeeper Glen Moss – a clinical early strike which was subsequently followed by 2630 seconds of toil.
The Jets largely controlled possession but struggled to get shots on target, while both teams swung crosses into the box with unsurprisingly little reward. Phoenix custodian Filip Kurto at least had to be awake to the Jets' balls into the box, punching several clear, and when he was finally tested early in the second half, he was alert, clawing away the scrappy products of a goalmouth scramble.
It looked as if the Jets were building something, and a suspected broken foot to Louis Fenton added to the Phoenix's concerns, but a VAR decision saw the Phoenix given a penalty when Williams was brought down inside the box, and he duly dispatched the spot-kick low to Moss' right. While Roy O'Donovan responded just two minutes later for the Jets, it turned out they simply had no answers for the wonderful Williams.
Just three minutes after the Jets had seemingly given themselves a chance, Williams cut in from the left, and from outside of the area curled a glorious effort into the top right corner, once again leaving Moss hopelessly stranded.
Singh added a fourth with his own superb curling effort, and four will be the number on the Phoenix's minds next week – with a chance to claim a record-equalling fourth win in a row, and a chance to finally break that four-year playoff drought.
Phoenix 4 (D. Williams 3, S. Singh)
Jets 1 (R. O'Donovan)
HT: 1-0