Runelvys Antonio Hernandez (Spanish pronunciation: [ruˈnelβis eɾˈnandeθ]; born April 27, 1978) is a former right-handed Major League Baseball starting pitcher.

On July 17, 2005, Hernandez ignited a bench-clearing brawl by hitting Detroit Tigers shortstop Carlos Guillén in the head to lead off the sixth inning.

The contract he signed with the Red Sox included an opt-out clause that would become effective if he was not on the Major League roster by June 1.

In September of that year, Hernandez, 25–36 for career in majors, received a 50-day suspension for testing positive for an amphetamine-based substance.

[2] However, the Office of the Commissioner of Major League Baseball announced on Friday, October 17, 2008 that it had withdrawn the suspension of the former Astros' starting pitcher because it was a first offense.