Casas was a member of the Philippines national football team being part of the squad in the 2004 AFF Championship.
In 2013, after graduating in University of St. La Salle he joined UFL Division 2 club Ceres.
[2] On 2018, after his five-year stint with Ceres, he joined fellow Philippines Football League club Global Cebu on a free transfer.
[5] After 14 years, in September 2018, he was again called-up in the Philippines squad for a national team training camp, and a friendly game against Bahrain.
This biographical article related to Philippines association football is a stub.