Folau was just 17 years of age when he made his debut in the 2007 NRL season. His debut came earlier than his coach Craig Bellamy intended, and he was named as a replacement on the for injured Steve Turner. He started in the side's first match of the 2007 NRL season, against the Wests Tigers, and became the youngest player ever to play for the Storm. In his first game, he scored the match-winning try to help Melbourne beat the Tigers 18–16. After such a solid performance in his opening game, and an injury-free year, Folau went on to play in every match of the season, the only player to do so for Melbourne in 2007. Playing superbly on the wing, coach Craig Bellamy brought Folau in to play in the s from time to time, where he would receive more ball and have more opportunity to score points. After 26 rounds Folau finished the regular season with 21 tries and 5 goals for a total of 94 career points. His try tally (21) saw him the equal top-try scorer for the 2007 regular season alongside North Queensland Cowboys full-back Matt Bowen.