In 1927 he played against the New Zealand Maori rugby union team, and then in 1927 the New South Wales Waratahs.
Jenkins gained his first cap for Wales team when he was selected to face the Waratahs again in their 1927 tour.
Jenkins's only other Welsh union cap was in the 1929 Five Nations Championship when he was chosen to face England on 19 January.
Under the captaincy of Ivor Jones, Wales lost their eighth consecutive game at Twickenham with the final score 8–3 to England.
Jenkins may have gained further caps but when the next Welsh game was played on 2 February 1929, Jenkins was playing rugby league for Leeds RLFC, having switched codes for £370.