Borrego was born on November 12, 1977, in Albuquerque, New Mexico and is of Mexican American descent.
[6] Borrego began his coaching career with his alma mater, University of San Diego, as an assistant from 2001 to 2003.
During his tenure, San Diego captured the West Coast Conference Championship and earned a trip to the NCAA Tournament in the 2002–2003 season.
[7] On February 6, he made his coaching debut against the Los Angeles Lakers, winning 103–97 in overtime.
[10] On May 10, 2018, the Charlotte Hornets named Borrego as their new head coach,[11] signing him to a four-year deal with the team.