The Bulldogs 18-16 NRL loss to the Storm has come with a further blow

Prop Dylan Napa suffered an ankle injury and was forced from the field.

Napa says he's confident it's not as bad as teammate Kieran Foran, who is out for up to three months after suffering a similar injury last week.

Elsewhere, the Dragons have won their second match in a row with a field goal in golden-point extra time.

Corey Norman was again the match-winner for St George as they beat Newcastle 13-12.