The Premier County can make history this evening when they take on Tyrone in Tipp's first ever All-Ireland final at Under 21 level.
O'Riordan says it's important to have belief in their own abilities when they come up against their Northern opponents.
Stephen Gleeson spoke to both O'Riordan and Bill Maher during the week about their decision to play football and today's All-Ireland final.
Meawhile, Tyrone Captain Kieran McGeary says Tipperary are a very determined team and will be a tough task in today's final. He praised his side's stellar coaching staff, which includes Peter Canavan who captained Tyrone to two Under 21 All-Irelands in the 1990s.
Tipp Under 21 Manager Tommy Twomey spoke to Tipp FM during the week.
Tipp FM's Football Analyst Brian Lacey previews today's All-Ireland Final with Darren Hassett.
Throw-in today is at 6pm and Tipp FM will have full live coverage in association with John Kennedy Motors, Main Toyota Dealer, Clonmel.
