 On 13 September 2009, he made his senior debut in the A-League for the Wellington Phoenix against Melbourne Victory at the age of 17, coming off the bench as a 77th minute substitution for Daniel making him the second youngest player to play for the Phoenix behind Kosta Barbarouses.Rojas got his second appearance for the Phoenix when he was substituted on for Paul Ifill in the 73rd minute against Central Coast Mariners on 27 September 2009.Rojas scored his first goal on his full debut for the Phoenix on 18 December 2010 in a 4–0 victory over the Newcastle Jets.