Jarl Magnus Riiber starred on home snow and closed the gap on yellow bib holder Johannes Lamparter, as the men's Nordic Combined season heads for a thrilling finish.
The three-time defending Crystal Globe winner jumped the furthest with 139 metres and converted that lead into a 57.5-second victory from Lamparter.
The Austrian saw his lead cut to just 87 points with three events to go, starting on Sunday.
Nordic Combined
Riiber snatches season lead on final weekend after brilliant win in Germany
12/03/2022 AT 22:34
Third place went to Riiber's teammate Jens Luras Oftebro, while Olympic champion Joergen Graabak was fourth.
Nordic Combined
Riiber storms to Nordic Combined victory in Oslo
06/03/2022 AT 16:20
'Whoa, yes!' - Watch 'fantastic' winning jump from Riiber in Oslo in Nordic Combined
05/03/2022 AT 10:52