After four years in rugby league, Suniula returned to union with the
Chicago Griffins in 2010. The following season he joined
RFU Championship side
Cornish Pirates, appearing 16 times for the club during the 2011–12 season. Suniula returned to Chicago Griffins the following season before joining his first top flight professional rugby union side when he signed for the
London Wasps for the 2013–14 season. He made five appearances for the club during his brief one-year stint. Suniula joined
CSM București for the 2015
Romanian Rugby Championship season. In 2018, Suniola signed for
Austin Elite and quickly became team captain, but by 2019 he was semi-retired and was succeeded as captain by
Ben Mitchell. ==International career==