Lopez's professional career began in 1984 when he appeared as younger brother Tomas in the short-lived ABC comedy series a.k.a. Pablo. That same year, he was cast as a drummer and dancer on Kids Incorporated. In March 1987. he was cast as a guest star on the popular sitcom Golden Girls as a Mexican boy named Mario who faces deportation. In 1989, Lopez was cast as A.C. Slater in the popular television sitcom Saved by the Bell, a role which lasted five years. Lopez's character was a masculine, athletic student, helping to garner the actor a sizeable teenage-girl fan base. After Saved by the Bell ended in 1993, Lopez went on to reprise his role as A.C. Slater in the short-lived spin-off series Saved by the Bell: The College Years. In 1997, Lopez starred as Olympic diver Greg Louganis in the television movie Breaking the Surface: The Greg Louganis Story. The following year, he was cast as Bobby Cruz in the USA Network series Pacific Blue. Lopez left the series after two seasons and went on to guest star on Resurrection Blvd., Eve, and The Bad Girl's Guide. In March 2006, Lopez joined the cast of the daytime soap opera The Bold and the Beautiful playing the role of Dr. Christian Ramirez. On July 18, 2006, he was released from his B&B contract. Later that year, he guest-starred as a plastic surgeon who drives Christian Troy to jealousy when he sees him naked in the shower in an episode of FX Network's Nip/Tuck during the show's fourth season, which began in Fall 2006. He also made an appearance in "George Lopez" as a police officer in late 2006.