December 5, 2003 Quintana competed against Candy Robertson in a ten-round fight. Quintana controlled the fight's tempo throughout the contest, which featured several holds. In the seventh round Robertson was docked a point, after losing his mouthpiece on several occasions. The fight ended in the eight round, when Quintana connected several combinations to Robertson's head after trapping him in one of the ring's corners, one of these punches connected on his opponent's face and he collapsed unable to recover before the count of ten. On March 5, 2004 Quintana fought against Edwin Cassiani in the undercard of a fight organized in Pala, California. Quintana scored the fight's first knockdown in the first round, when he connected a combination to his adversary's body. Following this round both fighter traded combinations. In the third round Quintana connected six consecutive punches to Cassiani's face, which made him collapse to the ring's canvas, the referee immediately stopped the fight. Quintana's next fight was against Kemal Kolonivic in a fight that took place on August 24, 2004. Kolonivic was used as a late replacement and was scheduled to fight in the undercard of a card that included Jose Nieves vs. Alberto Ontiveros. Quintana won the fight by unanimous decision. The judges awarded him scores of 80-72, 80-72 and 79-73. Quintana's next fight was against Nurhan Suleyman, on February 25, 2005. The card was organized in Miami, Oklahoma, and was scheduled for ten rounds. Early in the first round Quintana connected a solid punch on Suleyman's chin, and subsequently began boxing while his opponent followed him around the ring, he closed the first round connecting two combinations. This pattern continued in the second round when Quintana relied on boxing and connecting jabs, the round closed with both men trading punches. Quintana controlled the fight's tempo in the third and began the fourth round on the offensive scoring solid punches while trading combinations with his adversary, with one minute remaining in the round Quintana scored a knockdown and the fight was stopped seconds after when Suleyman didn't respond to his attack. On July 12, 2005 Quintana was scheduled to fight against Francisco Campos. Quintana began the fight on the offensive, connecting punches while boxing. In the third round of his punches connected solidly on Campos' chin. In the fourth round Campos tried to fight inside, but was countered by his opponent's strategy. Santos began the fifth round