Career
Ilagan is a two-time quarter-finalist (2000 and 2006) in the WDF Asia-Pacific Cup. He has also reached the final of the Philippines Open in 2006 and 2007 along with the final of the 2008 Malaysian Open. Ilagan reached the semi-finals of the 2009 Winmau World Masters after qualifying from the earlier rounds into the last 16, where he defeated number two seed Scott Waites and then beat Steve West in the quarter-finals.
He lost to Robbie Green in the semi-final.
Ilagan represented the Philippines with Christian Perez in the 2012 Personal Digital Cellular World Cup of Darts and together they were beaten 5–3 by the United States in the first round. He faced Colin Osborne in the first round and despite impressing with some clinical finishes, he lost 3–0.
He was due to play with Perez once more in the 2013 World Cup of Darts but they were forced to withdraw due to travel problems. Ilagan credited his eight hours a day practice routine in being key to his success and he earned $1,000,000 Hong Kong in the process.
In 2014, Ilagan was beaten in the semi-finals of the Chinese Dartslive event.
He partnered Gilbert Ulang at the World Cup of Darts and they lost 5–1 to Belgium in the opening round. A victory over Daisuke Akamatsu saw Ilagan claim the Malaysian Open. He came within a match of playing in the 2016 World Championship, but lost 3–2 to Alex Tagarao in the final of the Philippines Qualifier.
Personal Digital Cellular
2009: Preliminary round: (lost to Marko Kantele 2–5) (legs)
2013: First round: (lost to Colin Osborne 0–3).
