Lewin José Díaz was born on November 19, 1996, he is a Dominican professional baseball first baseman for the Miami Marlins of Major League Baseball (MLB). He is 6 feet 4 inches tall. He made his MLB debut in 2020.
Díaz signed with the Minnesota Twins as an international free agent on November 21, 2013. He played for the DSL Twins in 2014, hitting .257/.385/.451/.836 with 5 home runs and 27 RBI.
He split the 2015 season between the GCL Twins and the Elizabethton Twins, hitting a combined .233/.322/.371/.693 with 4 home runs and 20 RBI. He returned to Elizabethton in 2016 and hit .310/.353/.575/.928 with 9 home runs and 37 RBI.
He played for the Cedar Rapids Kernels in 2017, hitting .292/.329/.444/.773 with 12 home runs and 68 RBI. He spent the 2018 season with the Fort Myers Miracle, hitting .224/.255/.344/.599 with 6 home runs and 38 RBI.
On July 27, 2019, Díaz was traded to the Miami Marlins in exchange for Sergio Romo, Chris Vallimont, and a PTBNL. He was assigned to the Jacksonville Jumbo Shrimp following the trade.
Over 31 games with Jacksonville, he batted .200 with eight home runs. Díaz was added to the Marlins 40–man roster following the 2019 season.
On August 15, 2020, Díaz was promoted to the major leagues. He made his debut that day against the Atlanta Braves and got his first major league hit in his only at-bat against Mark Melancon.