Ayuso led the BSN in 2002 scoring 703 points and achieving a 24.2 PPG average.
During the summer of 2004, Ayuso was a member of the Puerto Rico National Team that participated in the 2004 Olympics which defeated the United States.
In 2005, Ayuso helped the Captains win their first title since 1959 when Arecibo beat the Bayamón Cowboys in four games during the BSN finals.
During the summer of 2006, Ayuso was a member of the Puerto Rico National Team that participated in the 2006 FIBA World Championship. Ayuso scored 106 points with a 21.2 PPG and shot a .629 3-point percentage during the tournament. Ayuso finished tied for fourth in PPG in the 2006 Worlds. Due to his outstanding performance during the 2006 Worlds the Denver Nuggets invited him to the 2006 Training Camp and was added to the Pre-Season roster.
During the summer of 2007, he joined the BSN Santurce Crabbers before joining the Puerto Rico National Team. During his tenure with the Santurce Crabbers he led the team to win the BSN Championship over the Arecibo Captains. He was elected the 2007 BSN Finals MVP.
This section may require cleanup to meet Wikipedia's quality standards. The specific problem is: The table is full of incorrect information (MPG, FG%); It also require "Career row" which currently doesn't exist. (November 2014)