However, his first season stint was cut short due to appendicitis, but still managed to score 13 points, grab 11 rebounds and block 10 shots in 55 minutes of action in 10 games.

[1] On his sophomore year, he bounced back from a disappointing first season as he averaged 5.7 points, 9.3 rebounds and 3.2 blocked shots per contest to help lead the Blue Eagles to a 10–4 finish in 2005.

PBA governor Lito Alvarez even went to the extent of banning Aguilar from the league for his refusal to sign with the Whoppers.

With SBP president Manny Pangilinan and executive director Noli Eala intervening and at Alvarez's behest, Aguilar signed the one-year contract with the Whoppers.

The deal required him to play a few games with the Burger King Whoppers after which he would be traded to the Talk 'N Text Tropang Texters (Pangilinan's PBA team), which in turn would release him to Smart Gilas.

Immediately after, Aguilar got his wish as the Whoppers traded him to the Tropang Texters in exchange for future draft picks, indirectly through Barako Bull Energy Boosters which acted as the conduit team.

[8] Days before the evaluation, Aguilar attended some open workouts hosted by the Bakersfield Jam of the NBA Development League.

[7] Shortly after, in early October 2012, Aguilar worked out with NBA D-League team, the Santa Cruz Warriors.

[15] After a failed attempt to play in NBA, he returned to the Philippines and requested a trade from the Talk 'N Text Tropang Texters.

In his first game for the Kings, Aguilar tallied 18 points, 8 rebounds and 5 blocks against San Mig Super Coffee Mixers.

In a December 8, 2013, game against his former team Talk 'N Text Tropang Texters, Aguilar knocked down a 3-point shot to give the Kings a 97–95 lead with 1.1 seconds remaining.

In the subsequent play, he blocked the game-tying field goal attempt by Ranidel de Ocampo to secure the victory.

However, for the 2011 FIBA Asia Championship, PBA pros Kelly Williams and Ranidel De Ocampo were added to the team, putting him in the back of the rotation.