Roberto Martinez's team claimed three points at the first time of asking with a single-goal success over Sunderland at the DW Stadium.
'I thought we deserved that win: the lads fought hard, worked hard, grafted and did so well through the whole game,' Whelan told www.wiganlatics.co.uk. 'We've shown time and time again this season how good a side we are when we start to play.
Perfect tonic: Hugo Rodallega (right) celebrates scoring against Sunderland
'The defeat at Tottenham has been, gone and is now forgotten about. We knew we had to get up and get on with things after that game and against Sunderland that's exactly what the lads did.
'It's amazing how much three points can do for you, on this occasion it's lifted us up three places, so it was an important result. If we can get around the 24 points mark by Christmas we'll be happy, and hopefully we can then go on to hold down a place in the top 10.'
Horror show: Jermain Defoe scores one of Spurs' nine goals against Wigan
Whelan also wished his former manager Steve Bruce well, having last week suggested the Sunderland manager's 'dodgy' signings at his club contributed to the mauling at White Hart Lane the previous week.
'Steve is a superb manager, and a good friend of mine,' said Whelan. 'We spoke before the game, exchanged our best wishes for Christmas, and I wish him all the best at Sunderland where he's doing a good job, just as he did here.'
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