Hull FC coach Lee Radford lamented a missed opportunity after his side suffered their first defeat of the 2017 season.
Hull FC went down 16-14 to Catalans in a close match at the KCOM Stadium.
The Black and Whites scored two tries to the Dragons’ one but indiscipline proved costly, and the French side won the match off penalty goals from Luke Walsh.
“It was painful to watch,” Radford admitted to Sky Sports.
“The stop start nature of the game didn’t help us. Fair play to them, it’s obviously what they set out to do and it worked a treat. Some of the errors were not acceptable.
“We got no fluency going. It’s an unbelievable missed opportunity with the crowd that turned out.
“First home game of the season, but we’ve got no one to blame but ourselves.”