A Tumbulgum junior, he played football in the Brisbane Rugby League for Fortitude Valley. Devery was then discovered by coach of Sydney's Balmain club Latchem Robinson while playing football in The Domain, Sydney as a sailor in the Royal Australian Navy during the war. Devery played for Balmain at halfback in the 1944 NSWRFL season's premiership final, scoring a try in his side's victory over Newtown. Devery also represented Sydney on 6 occasions, New South Wales on 2 occasions between 1946–1947. During the 1946 Great Britain Lions tour he was selected to play as the Australian national team's in all three Ashes tests. He is listed on the Australian Players Register as Kangaroo No.222. Balmain reached the 1946 NSWRFL season's premiership final and Devery played at centre in their victory over St. George. He was the 1947 NSWRFL season's top points scorer.
England
At the end of the 1947 season a large number of Australians signed with English clubs, headed by Devery who signed with Huddersfield for a fee of £1,350 Devery scored a try and kicked two goals in Huddersfield's 13–12 win over Warrington in the 1948–49 Northern Rugby Football League season's Championship Final at Maine Road, Manchester on Saturday 14 May 1949. In the same season he played left- in Huddersfield's 4–11 defeat by Bradford Northern in the 1949 Yorkshire Cup Final at Headingley, Leeds on Saturday 29 October 1949. The following season he again played in the Championship Final of the 1949–50 season as Huddersfield lost 2–20 to Wigan at Maine Road. In 1952 Devery was a member of the Huddersfield team and scored 3-goals in the 18–8 victory over Batley in the 1952 Yorkshire Cup at Headingley on Saturday 15 November 1952. He played left- and scored a goal in Huddersfield's 15–10 victory over St. Helens in the 1953 Challenge Cup Final at Wembley Stadium, London on Saturday 25 April 1953, in front of a crowd of 89,588. During the game Devery was injured and as no substitutes were allowed at this time Devery continued to play but he and left wingerLionel Cooper exchanged places and Cooper took over the kicking duties. Devery went on to break the Huddersfield club's record for most points in a season with 332, achieved during the 1952–53 season. He scored over 1,000 points during his English career between 1948–1954. He also made 11-appearances for the Other Nationalities, and one appearance for the British Empire. He was also a teacher at Oakes Elementary school in Huddersfield in the late 1940s, and early 1950s at the same time as Bon Spence the former Huddersfield TownFull back.
Coaching career
On his return to Sydney, he commenced coaching the Manly-Warringah club in 1955, taking them to a third-place regular season finish. The 1956 season finished with Manly in sixth place, just missing out on a spot in the finals. In 1957 Devery finished his coaching career at Lithgow.