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By Tony Leighton
Winger Roberts was part of the Huddersfield Town team that in 2011 were favourites to win the League 1 Play-Off Final against Peterborough at Old Trafford - only for Posh to run out convincing 3-0 winners.
"It was devastating to lose that game," Roberts told football-league.co.uk, "and then we had salt rubbed into our wounds in the players lounge after the game.
"The Peterborough players came into the room with balloons and wearing silly hats and wigs to celebrate their win, and although they'd got every right to do that it was hard for us to take as we sat there with our families.
"So on a personal basis I'm aiming to put one over them on Sunday, but more importantly I want to win the Trophy for Chesterfield and our great supporters.
"It's my first season at the club and I'm thoroughly enjoying it here. At the start of the season we set ourselves the targets of promotion and a good Cup run, and hopefully we're on course for both."
Ahead of League 2's weekend fixtures Chesterfield are third in the table and six points above the Play-Off places - and Roberts is desperate to clinch automatic promotion after being in the League 1 Play-Offs in each of the last four seasons.
He twice missed out with Huddersfield before winning the 2012 Final against Sheffield United, then last year he was a semi-final loser with Swindon Town.
"I don't want to go through the Play-Offs again," said the 30-year-old winger, "so I've pleaded with the lads to get us over the line for automatic promotion.
"We've shown that we're more than good enough to achieve our aim, but we've got to keep our nerve over these last few weeks of the season."
If the Spireites do end up with the double of Johnstone's Paint Trophy and promotion, it will be a triple triumph for Roberts after collecting the divisional Player of the Year award that was voted for by the Sky Bet League 2 managers.
"I didn't expect to get the award," said Roberts, "but I was over the moon when it was announced that I'd got it. The fact that the votes came from the division's managers makes it very special and I was honoured to win it.
"It means I've had a decent season, but I wouldn't have got the award without the players around me and the faith of a very good manager in Paul Cook.
"He obviously wants promotion, but he's also desperate to win the Johnstone's Paint Trophy and that's absolutely our aim on Sunday.
"Peterborough will be massive favourites because they're a very good League 1 team going for promotion themselves, but we're a very good team as well.
"The big Wembley pitch will suit our footballing style, and it could be a great final because Peterborough are also a side that go out to play good football.
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