José Dennis Martínez Emilia (born May 14, 1955), better known as Dennis Martínez, was the first baseball player from Nicaragua to play in Major League Baseball. He was born in the city of Granada.
DennisMartinez is honored as a finalist for the 2001 Buffett Award for Indigenous Leadership in Conservation for his work over the past thirty-two years on indigenous community based ecological and cultural restoration, and for his endeavors in building bridges between Traditional Ecological Knowledge (TEK) and Western Ecological Science (WES).
Dennis is co-director (with Agnes Pilgrim of Siletz Confederated Tribes) of the Takelma Intertribal Project in southern Oregon.
Dennis is a member of the National Network of Forest Practitioners and the Alliance of Forest Workers and Harvesters, focusing on multi-cultural restoration training workshops.
Martinez was the last of five pitchers that Earl Weaver used in the top of the ninth inning of Game Seven of the 1979 World Series.
Martinez was 19-6 with a 2.37 ERA in games he pitched in Atlanta, Pittsburgh, and Philadelphia.
Martinez and Scott McGregor both joined the Orioles starting rotation in 1978, in place of Rudy May and Ross Grimsley, both of whom had went to Montreal, one in a trade, the other via free agency.