Draw specialists West Bromwich Albion shared the spoils for an astonishing 10th time in 11 games as they held Sheffield United at The Hawthorns.
But the Blades' point was still enough to send them back above Leeds United to the top of the Championship table.
In pouring rain in the Black Country, the Baggies led through Torbjorn Heggem's early header, only to be pegged back by two goals in two minutes, scored by Callum O'Hare and Tyrese Campbell.
But, unlike so many of Albion's previous drawn home games this season - six in their first eight games - this was a comparative classic.
And they got a deserved but fortuitous point when Tom Fellows' 62nd-minute cross was deflected outrageously in.
Torbjorn Heggem got on the end of Alex Mowatt's cross to head his first goal for West Bromwich Albion
It looked comfortable for Albion for the first half-hour as they took a well warranted early lead.
Heggem's header from Alex Mowatt's left-foot inswinging right-wing corner was the summer signing's first goal for the club.
But Albion were pierced by the Blades twice in quick succession - and winger Harrison Burrows was the supply line each time.
First, his low cross cannoned on off two Albion defenders and into the path of O'Hare, who stabbed home as keeper Alex Palmer failed to react.
Then, when the Blades spread it wide again, Burrows was left with too much room and he was able to guide over an even more dangerous delivery, which Campbell coverted.
It was a sixth goal in eight games for the free-transfer August signing, who was allowed to leave Stoke City at the end of last season.
However, in the deteriorating, rain-lashed second-half conditions as Storm Darragh continued to blow fiercely, Albion enjoyed a huge stroke of luck just past the hour.
Fellows' attempted cross from the right corner of the area deflected wickedly into the ground off Gus Hamer and then looped almost comically over keeper Michael Cooper's reach into the top-left corner.
Sheffield United boss Chris Wilder told BBC Sport:
"We were up against a really good team. We knew this was a massive test for us. and we showed great character to overturn a lead the way we did.
"So I'm delighted with that. As far as I'm concerned, that's our best, hardest-earned point of the season. It was so important we got something.
"We could easily have decided it wasn't going to be our day, let's get back on the bus and get home and get in front of the fire. But they didn't.
"It was tough out there. But this side are learning on the job. We had six 22-year-olds on the park at one stage playing against men, in men's conditions. But they fought back and got a result."