Career
At the turn of the decade, he was selected to play for the Brunei team competing in Liga Semi-Pro Malaysia. Rosanan left the national representative side in 2000. He returned to Kota Ranger as player-coach a year later, and was also given opportunities to coach Bruneian exhibition sides at the time.
Hired by BAFA as a coach in 2009, Rosanan was assigned various coaching positions since, such as the Brunei Youth Team that played in the domestic league (2009–2011), the Under-21s (2012), and the Under-15s as assistant coach (2013).
He was assistant to Kwon Oh-son for the Hassanal Bolkiah Trophy competitions for the U21s in 2012 and 2014. Rosanan played for Brunei"s national team at the 1999 Southern Economic Association, USA Games held at home, and played all six matches at the 2002 World Cup qualifying campaign without scoring a goal.