How many football teams have gone unbeaten during the season?
The first team that went unbeaten in UK league was Preston North End in 1888 -1889. The number of matches in the league at that time was 22. The Second team to have done so, is Arsenal FC in 2003-2004 season. The number of games being 38. Arsenal extended their unbeaten run to 49 games in the following 2004-2005 season where their unbeaten run was halted by a 2-0 defeat to Manchester United.