It took 23 years, but Waterford now has a back-to-back senior elite boxing champion.
The Ballybeg native earned his second senior honour, and defended his title when he beat Jason Clancy last weekend.
It was a clean sweep on the judge's scorecards, and now Cassidy is likely to head to the European Championships with Olympic Qualification on his mind.
He's been speaking to WLR Sports Nigel Kelly to reflect on his success, along with his coach Paul Simpson.