Writing in The Derby Telegraph, the 32-year-old defender recalled: “Our 2-1 win at Elland Road in August 2010 is one of the favourite moments of my Derby County career…
“We started well and went ahead when Rob Hulse scored. Leeds equalised through Luciano Becchio and then Kris Commons put us back in front.
"Russell Anderson, playing alongside Dean Leacock at centre-back, picked up an injury just before half-time and it was clear he would not be able to continue in the second half.
“I kind of knew what was coming. The gaffer asked if I was ready to play the second half. It was the question I wanted to hear even though he and I knew I wasn’t match fit...
"I was delighted with the way things went and we won 2-1 but a few days later I started a League Cup tie at Crewe and scored an own goal. Such are the highs and lows in football.
“That Leeds game is one I will always remember and typifies me as a player, I think.”
Barker will face Leeds once again on Saturday when Derby take on the Whites at Elland Road in the Championship.
The Rams will be favourites to win the encounter as they are currently three points clear at the top while Leeds are just two points above the relegation zone.