BEN Thompson made his senior professional league against Saturday's opponents Coventry in August – but he doesn't want to repeat the experience.
Thompson came on at half-time for Lee Martin against the Sky Blues, but Millwall were already three goals down and went on to lose 4-0.
The 20-year-old midfielder's second league appearance was against Barnsley, but that also ended in disappointment as Lewin Nyatanga's injury-time goal gave the Tykes the three points.
He had to wait until October 24 for his first league win in a Lions shirt, when Aiden O'Brien's double gave the Lions a 2-1 win at Sheffield United.
Thompson has been behind Shaun Williams, Jimmy Abdou, Ed Upson and George Saville for a place in the team this season.
But after Williams picked up a two-match ban for a booking at Rochdale and Upson got injured against Scunthorpe, Neil Harris gave Thompson a starting place and he has been in the first XI for the last 10 fixtures, of which Millwall have lost just one.
Harris' side go into this weekend's match 12 points ahead of Coventry, and Thompson is promising the memory of the humiliation at the hands of Tony Mowbray's side will provide the motivation at the Ricoh Arena.
"It was difficult and a very disappointing result," Thompson said. "The fact it was my league debut was a little highlight but Saturday will be a much different game. We'll be strong defensively and hopefully we can go and get three points.
"At the start of the season you can never get too low with plenty of games left. It's the business end of the season now and I don't think the boys will go out there and let anything like that happen again."