Alfonso was born in El Paso, TX and moved to Tucson, AZ in 2011. He attended high school in Mexico and then attended the University of Texas at El Paso, where he received a degree in finance with a concentration in commercial banking.
Alfonso played at Nationals for four years representing the state of Chihuahua, Mexico while in High School (1993-1997). He participated in the Juvenile Olympics in Guadalajara, Mexico in 1998, played Second Division in 1999, and First Division in 2000 in Mexico.
Alfonso started coaching in 2015 when he introduced his daughters to volleyball. He joined the Zona staff for the 2020 season.
Alfonso is married and has two daughters who love volleyball as much as does.