Geyer's form for the Panthers in 1991 again earned him selection for NSW during the State of Origin series. Geyer received a five-match suspension for an incident in the second game at a wet Sydney Football Stadium, which was preceded by a half-time confrontation with Queensland captain Wally Lewis in which referee David Manson and NSW captain Ben Elias had to stand between the two who twice almost came to blows. He was cited for an elbow to the head of Queensland fullback Paul Hauff, which sparked an all-in brawl. His suspension saw him unavailable for selection in the first test of the 1991 Trans-Tasman Test series against New Zealand in Melbourne, though after the Australians lost the test 24-8 a number of changes were made and Geyer's form was rewarded with selection in the second test in Sydney and the third in Brisbane. The Aussies went on to win the final two tests to wrap up the series 2-1.