Diego Alfonso Martínez Balderas (born 15 February 1981) is a Mexican former professional footballer who played as a right-back.
His ability to attack made him a fan favorite and quickly earned him a starting position.
Martínez usually played in the right wingback position with Chivas, providing the team with crosses and through passes in the attack.
Monterrey, San Luis, Tiburones Rojos de Veracruz, and most recently CF La Piedad, until July 2012, when he received a second shot with Chivas, which included Diego in the squad for the next Apertura tournament.
In 2014, he joined an organization named Glorias del Deporte, aimed to get kids to play football and get away from drugs.