The most recent high-profile example took place in the 2010 World Cup last 16 match between Germany and England when a disallowedgoal by Frank Lampard was shown to have crossed the line.
But Oxford's 1544 travelling fans were left to rue a great first-half save by home keeper James Bittner to deny 18-goal top scorer James Constable from 12 yards, as well as a disallowedgoal by midfield man Alfie Potter.