Joe Ward feels the referee intervened at "crucial" stages during his light heavyweight defeat to Carlos Andres Mina in Rio.
The Irish boxer received two public warnings during the fight which sees him exit the Olympics.
"Very disappointing the way the fight went. I felt like I was doing enough in there to win the fight, landing the cleaner punches. I felt like the referee got involved twice in crucial stages which was very unlucky for me to get two public warnings especially when the fight was nip and tuck," he said to Newstalk's Richie McCormack.
"I felt I was doing enough but it's very disappointing the way the referee got involved and messed it up."
He added that the two public warnings "cost me the fight" and that he was winning the fight when the "referee got involved for no reason."
"If anything [Mina] was doing most of the holding. He was pulling and dragging and very messy," he said of his opponent.
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