Mendez-Valdez attended Lanier High School in San Antonio, Texas, where he graduated in 2004. He was named the San Antonio Player of the year his senior year and first team All State honors, and his jersey number was retired in 2009.[2][3]
Mendez-Valdez attended prep school at Charis Prep in Goldsboro, North Carolina.[4] He won the MVP award in the Bull City Classic, and led the team to a championship at the tournament.
After failing to be drafted in the 2009 NBA draft, he played professional basketball in the LNBP from 2009 to 2016. On September 14, 2016, Mendez-Valdez signed with the Israeli team Maccabi Haifa for the 2016–17 season.[6] During his season with the club, Mendez-Valdez won the Three-Point Shootout contest in the Israeli League All-Star event, he also helped Haifa reaching the Israeli League Finals.
He returned to the LNBP on August 25, 2017, signing with Soles de Mexicali for the 2017–18 season.[7]
Mexico City Capitanes (2022–2023)
On November 4, 2022, Méndez was named to the opening night roster for the Mexico City Capitanes.[8] On January 7, 2023, Méndez-Valdez was waived.[9] On January 19, 2023, Méndez-Valdez was reacquired by the Capitanes de Ciudad de México.[10]