Wigan Warriors suffered a shock 34-18 loss to Hull KR as the Super League leaders were undone by an inspired display from hat-trick hero Greg Minikin.
Bottom side KR produced an outstanding performance at Headingley to claim only their second win of the season, with Minikin the star.
Elliot Minchella and Minikin both touched down twice in the first half to eclipse Sam Powell and Harry Smith's efforts for Wigan, who were 22-12 down at the interval.
Hull remarkably extended their advantage in the second half as Dean Hadley joined the fun before Minikin completed his treble.
Jackson Hastings late burst across the line was never going to unduly worry Tony Smith's men, who still had time to add gloss with a penalty from Jordan Abdull.
There was drama aplenty in Thursday's other game, with 2019 Grand Final losers Salford Red Devils surrendering an 18-0 lead in a 37-30 defeat to Castleford Tigers.
The Tigers earned their first win since the restart with a thrilling comeback led by a 17-point showing from Danny Richardson.
A third match scheduled for Thursday did not go ahead after two Wakefield Trinity players tested positive for coronavirus, leading to their clash with Leeds Rhinos being postponed.