Ospreys Dirksen made his debut for Ospreys in November 2009 against
Bath Rugby and scored his first try for the region in February 2010 against
Leeds Carnegie in his only other appearance in the 2009–10 season. Dirksen featured for Ospreys 5 times during the 2010–11 season, scoring once. During the 2011–12 season Dirksen scored 8 tries for Ospreys in 24 matches. Dirksen's Ospreys career was punctuated by injuries, and faced competition with other Welsh wing contenders. Dirksen officially departed the club in 2021, after more than ten seasons, winning the league in 2012.
Major League Rugby Dirksen signed to play with
NOLA Gold in March 2021 for the
2021 Major League Rugby season. He played for NOLA Gold on 12 occasions, scoring two tries.
Return to Wales After one season in the United States, Dirksen returned to Wales ahead of the
2021–22 Indigo Group Premiership, once more playing for
Swansea RFC. ==International career==