A versatile utility man, Finol was able to play all positions except pitcher and catcher, playing mainly at right field and first base. Basically a line-drive hitter and a fine defensive player, he started his career in the Venezuelan League in 1946 with the Cervecería Caracas club, playing for the franchise in nine of his 11 professional seasons, often as its fourth batter. He also spent part of two seasons with the Gavilanes (1953–1954) and Magallanes (1955–1956) teams.
As a rookie, he led the circuit with seven home runs, becoming the first player to win the league's home run title. In the midseason, he also became the first player to hit a grand slam in the league's history.
Finol later led the league with 35 RBI in the 1947–1948 season. His most productive effort came in the 1953–1954 tournament, when he posted career-highs in home runs (10), RBI (47) and games played (70). He also had two good seasons, hitting .320 in 1948–1949 and .365 in 1951–1952.
Finol died in 1994 in his homeland of Zulia at the age of 75.
- During the 1949 Caribbean Series Finol hit a home run off Cuban team pitcher Conrado Marrero, to become the first player ever to homer in the Series.
- Was a member of the Venezuelan team who won the 1941 Baseball World Cup tournament.
- In 2012 received the honor of induction into the Venezuelan Baseball Hall of Fame and Museum as part of their ninth class.
- Cordero, Rafael. "Don Dalmiro Finol", en Tiempo Muerto de Nostalgia(pp 25–41), ISBN 980-303-355-7, Ed. Universidad Lisandro Alvarado, Barquisimeto, Venezuela, 1997
- Gutiérrez, Daniel. Enciclopedia del Béisbol en Venezuela – 1895-2006. Caracas, Venezuela: Impresión Arte, C.A., 2007.