Leeds fan Aaron Crawley has been jailed for running on to the pitch and attacking Sheffield Wednesday keeper Chris Kirkland during a Championship game.
Kirkland required treatment after being struck in the face during Friday's game against Leeds United at Hillsborough.
Cawley from Cheltenham, Gloucestershire, pleaded guilty at Sheffield Magistrates' Court to assault and entering the field.
He was given a 16-week jail sentence and a five-year football banning order.
The court heard Cawley had been drinking heavily and had already breached two previous banning orders.
District Judge Redhouse heard that Cawley emailed the police to say sorry and also emailed Sky Sports, who broadcast the match, in the hope his apology would be passed on to the two clubs and Kirkland.
A spokesman for Leeds United said: "We are pleased to see the matter dealt with by the courts so quickly.
"The club will also ban the individual for life from Elland Road when this banning order expires.
"While we are pleased to see justice brought so quickly, our one disappointment is that we feel the sentence could, and should, have been considerably longer."