The suspect approached the intended victim on Montezuma Road near 63rd Street and demanded his phone at about 3:10 a.m., according to university police.
However, the victim struck the suspect and knocked him to the ground, police said. The assailant ran away, and the suspect fled empty-handed north on 63rd Street, police said.
Police described the suspect as black, 20-25 years old, and 6 feet 2 with a medium build and facial hair. He was wearing black pants and a gray SDSU hooded sweatshirt with the hood pulled over his head.
Anyone with information is asked to call the San Diego Police Department at (619) 531-2000, or email firstname.lastname@example.org.