Since the age six, Del Rosario has had a passion for football which his older brother and his parents were influential figures. He then played for a local team in the Hillsborough, California. He eventually played football at Burlingame High School for four years and was part of the varsity team which was the first CCS Champion Team at the school. In 2004 that Varsity CCS Champion Team of 1996-1997 was inducted into the BurlingameHigh School Athletic Hall of Fame, which his older brother was also a part of. After high school, he continued his passion and played football in Burlingame, playing two years of football at Skyline College and then two years at Notre Dame de Namur University.
Club career
Del Rosario played for Kaya from 1999 to 2014. He served as captain for the football club. After 15 years with Kaya, del Rosario joined division rivals Loyola Meralco Sparks F.C. where he played as a center back. In 2017, del Rosario joined the newly-formed Ilocos United F.C. of the Philippines Football League. Del Rosario also served as the club's captain, being the most veteran player on the squad. After Ilocos left the PFL after the conclusion of the 2017 season, del Rosario took a break from professional football before signing in for Global Cebu debuting for the club in their 0-1 loss against the Davao Aguilas on August 18 in the latter part of the 2018 season.
International career
While living in the Philippines for a couple of years as a teenager, Del Rosario tried out for the Philippine national team. He was successful enough to get selected and has been involved with the national team since 2000. Although he only made his debut on 8 December 2004 against Myanmar in the Tiger Cup. He went on to play all the matches in that tournament as a right back and has since become an integral part of the Philippine national team. Del Rosario scored his first goal against Brunei via a free kick from 30 yards in the 2007 ASEAN Football Championship qualifiers.
Del Rosario is the younger brother of former Philippine international footballer Armand Del Rosario. Del Rosario says that he is very close to his brother and credits him for turning football in his life. In 2007, Del Rosario was able to help Julie Loucks get into the Philippine women's national football team. Louks, a Philippine born American, was on the roster of the women's team at Notre Dame de Namur University at that time. Del Rosario informed and spoke highly of her to the coaches of the national team which led to successful tryouts. In 2012, Del Rosario and his older brother, Armand joined TV5's The Amazing Race Philippines. They were eliminated in Leg 2 after they violated a rule finishing in 10th place. Del Rosario became engaged with Samantha Richelle Bolkiah, daughter of Prince Jefri Bolkiah of Brunei after about at least a year and a half of dating Bolkiah.
