Deputising for injured skipper Eugene Galekovic for the second straight match the 22-year-old earned the admiration of Hyundai A-League fans with a brave first-half save to deny Morten Nordstrand a certain goal.
With the match still goalless 11 minutes before the break a quickly taken free-kick looked to have caught the Reds out at the back when the Jets striker connected with a looping header.
However Hall was on hand to bail his side out, retreating quickly and diving full-stretch to parry the ball away, with his head clattering into the post in the process.
While fans gasped at what looked to be a serious injury, the Reds shot-stopper was immediately back to his feet to defend the corner and was more concerned about the result at half-time.
“Yeah we’ve done a great job, I think we’re much more switched on than we have been,” Hall told Fox Sports at the break.
“All that’s left now is to be more clinical in the front third.
“Noggin’s fine, noggin’s fine. I’ll be right for the second half.”
Adelaide went on to claim just their third win of the season, with a Marcelo Carrusca penalty enough to bank all three points and a clean sheet for Hall.
Here’s how fans reacted to the save (which you can view in the media player above or see here ), with one particularly impressed Reds supporter elevating the goalkeeper to divine status.
Someone check what John Hall's head is made of - we can use that info to build Iron Man suits. #ADLvNEW— Ned Zelic (@NedZelic) February 17, 2017
John Hall... top shelf.. JH 1 - Post 0 #ADLvNEW— Carmine (@djcarmine23) February 17, 2017
Commitment from John Hall there. Kudos. #ADLvNEW— 99. Boris (@23RBG) February 17, 2017