Overview
- The Seattle Mariners announced his death Wednesday, recalling his generous spirit in returning for team celebrations including Hispanic Heritage Day in 2012.
- The Boston Red Sox released a statement mourning the former reliever who bolstered their bullpen during the 1974–75 seasons.
- He made history as the opening-day starter for the Seattle Pilots in 1969 and for the Mariners in their inaugural 1977 game.
- Seguí won the American League ERA title in 1970 and finished with a 3.81 ERA, 92 wins and 71 saves over 639 games.
- After his MLB career, Seguí pitched in the Mexican Professional League until 1984 and was honored with the Negro Leagues Beisbol Lifetime Achievement Award in 2024 along with inductions into multiple halls of fame.