By SIMON THOMAS

Dragons............ 24pts
Tries: Hewitt 43, Davies 74, Dyer 77, 80
Conversions: Reed 44, 80

Oyonnax.............. 7pts
Tries: Treilles 22
Conversions: Soulan 23
WALES wing Rio Dyer scored two late tries as the Dragons made a winning start to their Challenge Cup adventure at a windswept Rodney Parade.
After second row Joe Davies had put them in front six minutes from time, Dyer delivered a quick double to secure a bonus point victory.
The Dragons had trailed 7-0 at the break, but a converted try from wing Ashton Hewitt levelled things up early in the second ha...