Kallum Watkins' 100th try for Leeds knocked Hull off the top of the Super League table in a breathtaking finish at the KCOM Stadium, with James Segeyaro making his debut.
The Rhinos trailed 15-8 after 71 minutes but Watkins went over twice in four minutes to earn his side a 20-15 victory which enabled them to complete the league double following their 20-18 victory at Headingley in April.
Leeds stay bottom despite the win, while Hull relinquish top spot following Wigan's last-gasp triumph over Wakefield.
Hull, who suffered a surprise defeat at second-bottom Huddersfield a week earlier, could have no complaints after being out-scored four tries to two in a game in which hardly resembled a top-versus-bottom clash.
The Rhinos gave a debut to former Penrith hooker Segeyaro, who was prominent early on as the visitors made a bright and breezy start, opening the scoring in customary fashion.
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A handling error from Hull stand-off Carlos Tuimavave presented the Rhinos with a perfect attacking position and stand-in skipper Rob Burrow made the most of it by sending full-back Liam Sutcliffe over for a third-minute try.
With Segeyaro back on for his second spell at the start of the final half, Leeds got their second wind and rocked their hosts with some more enterprising play.
In Wigan, a 12-man Warriors overcame the loss of skipper Sean O'Loughlin to secure a last-second 22-18 win over Wakefield Trinity Warriors to extend their winning run to seven matches.
Hull KR remain in contention for a Super 8s spot after a come from behind 20-19 win against Huddersfield at the KC Lightstream Stadium.
And St Helens notched a thrilling 12-10 Super League derby victory over Widnes thanks to a late penalty from Mark Percival.
