Gary Madine was jailed for 18 months after he was found guilty of punching two men in separate nightclub attacks. The Sheffield Wednesday striker, 23, had a previous conviction for knocking a man out in a Carlisle pub.
In February last year he, punched Wednesday fan Daniel Beresford in the Paris Bar in Sheffield city centre, breaking his nose.
Four weeks later, he punched bricklayer and Sheffield United fan Reece Hall in the city's Viper Room club, shattering his cheekbone. He was jailed at Leeds Crown Court after being found guilty by a jury following a week-long trial last month.