QPR midfielder Kieron Dyer admits his time at West Ham United was the worst period of his career.
Dyer is gearing up to face the Irons for the first time since making the switch across the capital in the London derby on tonight.
He told the Fulham Chronicle: "It was the most frustrating time of my career. We got relegated and I only played a handful of games.
"I believe that if I got a run of games under my belt and stayed injury-free then I could've helped our cause more.
"It wasn't for a lack of effort. I tried everything physically possible to get on the pitch but it wasn't to be.
"I'm absolutely gutted because it was four years where I never played three games on the trot. If you considered what I went through on a personal level I look back at that with a lot of regrets because it was a case of what if?
"It's a fantastic club with fantastic fans, but I was never on the pitch enough to justify the wages and the fee they paid for me which is very unfortunate."