 Unfortunately O'Riordan's career was shortened at County by an injury on the opening day of the 1991–1992 season against Manchester United at Old Trafford.He would play no further effective part in the season which Neil Warnock cited as being a big factor in Notts getting relegated that season.In February 1993 O'Riordan joined Torquay United as Player Coach at a time when Torquay looked favourites to get relegated out of the Football League but he played a big role in their survival and that summer took over as manager.