Mikel

Mikel was a human male, born in 2340 on the farm world of Gault. In 2353, Mikel suffered a broken neck while playing soccer against Worf in a school league championship game. Mikel died the following day. (DS9 episode: "Let He Who Is Without Sin...")

Worf relived this tragedy while under assault by the Chova in 2371. (TNG comic: Perchance to Dream)