St Helens coach Nathan Brown admits he stayed on too long at former side Huddersfield before taking up his position with the Saints.
Brown was appointed at Langtree Park last April on a three-year contract but stayed on at the Giants until July, intending to see out his fourth season at the Yorkshire club.
Huddersfield were top of the Super League at the time of Brown's appointment, but shortly after their performances dropped, and the Australian left in the aftermath of their crushing Challenge Cup semi-final defeat to Warrington.
The 39-year-old admitted his mistake in remaining at the club, he said: "The reality is with European sport when you sign somewhere you generally go the next day, whether you're a coach or a player.
"At the time I made my decision, my intentions were good to stay and the club's intentions were good but it didn't work out unfortunately.
"It wasn't anyone's fault. I probably should have left the next day but we all wanted it to work. It didn't, so you shake hands and move on."
He will come up against his old club on Friday when they play his new team in a pre-season friendly at Langtree Park, just three weeks before they coincidentally clash in the opening round of Super League.
"I'm not sure what to expect but I'm looking forward to it," he said.
"I've got a great relationship with the people at Huddersfield. I still talk to the players and the coaches, there's no hard feelings. It's just sport, sometimes the rugs don't fit any more.
"I want us to do well but I want Huddersfield to be just a bit worse than us, if that makes sense.
"If we were to come first and them come second, it would be an ideal result."
Which team has the best chance of making the play-offs in 2013?
Salford City Reds