SAM BAIN from Swinton asked DJ what his most disappointing day in football was after Lee McCulloch's comments this week?
Back in the Seventies, we had the chance to win the league at Celtic Park but we went there and lost 4-2.
We had a couple of players sent off, they had one sent off, and Murdo McLeod scored the fourth from about 30 yards.
Had we won, we would have won the league. Even though it was early in my career, that was a huge chance missed and a really bad day.
If you have a question for Derek, just email him at firstname.lastname@example.org and we'll print the answer alongside the question.