 A native of Carolina, Puerto Rico, he was a switch-hitter and threw left-handed.In a nine-season career, Hernández posted a 23–15 record with a 3.03 ERA and 46 saves in 337 relief appearances, giving up 145 earned runs on 339 hits and 135 walks while striking out 255 in 430 ⅓ innings of work.Hernández died in Ponce, Puerto Rico, at the age of 68.