Mateo "Matty" Rojas Alou (December 22, 1938 – November 3, 2011)[1] was a Dominican professional baseball player and manager.

[2] Alou was the middle of a trio of baseball-playing brothers that included the older Felipe and younger Jesús.

[8] Alou's best years as a player were spent with the Pirates, where he won the National League (NL) batting title in 1966 and was a two-time All-Star in 1968 and 1969.

[9] After being traded to the Pittsburgh Pirates before the 1966 season Alou received instruction from expert hitting instructor Harry "the Hat" Walker that helped turn him into a high-average contact hitter.

His contract was sold by the St. Louis Cardinals to the San Diego Padres on October 24, 1973,[11] In 1969 Alou led the major leagues in at-bats (698), doubles (41), and hits (231).