Give some stream of consciousness and then the answer. From 1998 to 1999, Huertas played the role of Antonio in the television series Moesha. From 1999 to 2000, he played Brad, a witch hunter, in Sabrina, the Teenage Witch. Beginning in 2009, Huertas has starred in the role of Detective Esposito in ABC's police procedural Castle. In 2012, Huertas and his Castle co-star Stana Katic received the award for Performance in a Drama Episode at the 16th Annual PRISM Awards.

Answer this question: who played brad on sabrina the teenage witch?
The relevant information is: From 1999 to 2000, he played Brad, a witch hunter, in Sabrina, the Teenage Witch.
Therefore, the answer is Huertas.