Chelsea manager Guus Hiddink believes the tension has been put back into the title race following Chelsea's 1-0 victory over Manchester City.
Football betting odds on Chelsea winning the Premier League have since shortened slightly following the result.
Following Liverpool's stunning 4-1 win over leaders Manchester United at Old Trafford on Saturday, the Blues also moved to within four points of the Premier League leaders after Michael Essien's first-half winner.
Both Chelsea are Liverpool are hard on the heels of United following a weekend when fresh life was breathed back into the title race.
Elsewhere on Sunday, Aston Villa's pursuit of fourth place and Champions League football suffered a further knock as they went down 2-1 at home to Tottenham Hotspur.
Villa slipped out of the top four for the first time since December following goals from Darren Bent and Jermaine Jenas, coupled with a victory for Arsenal over Blackburn Rovers 24 hours earlier.
In Scotland, Celtic are celebrating after extra-time goals from Darren O'Dea and Aiden McGeady were enough to overcome Old Firm rivals Rangers in the final of the Co-operative Insurance Cup.
In the Six Nations, an inspired first 40 minutes from England blew away a woeful French side 34-10.
France arrived at Twickenham as favourites to beat Martin Johnson's mis-firing side, but succumbed to some brilliant forward play from the likes of captain Steve Borthwick, Simon Shaw and Tom Croft.
Les Bleus' title hopes were ended following the shock result of the tournament to date.
However, England's cricketers were again on the losing side in their disappointing tour to the Caribbean.
Andrew Strauss' side lost a one-off Twenty20 game to the West Indies by six wickets in Trinidad.
Batting first, the tourists were bowled out for just 122 and the Windies then made light work of the run chase as opener Ramnaresh Sarwan smashed 59 off 46 balls and they reached the target with two overs to spare.
Phil Mickelson has finally broken his World Golf Championship duck after winning the WGC-CA Championship by one shot at Doral.
The left-hander overcame a bout of heat exhaustion, which resulted in him spending Saturday night in hospital, to card a final-round 69 and hold off the challenge fellow American Nick Watney.
Mickelson, who had contested 26 previous WGC events without success, finished on 19 under par to claims his 36th career PGA Tour title.
Bradford Bulls are still without a win this season after slumping to a 36-24 rugby league Super League home defeat to unbeaten Hull.
Elsewhere, Clint Newton's hat-trick helped Hull KR move up to fifth as they beat winless Celtic Crusaders 48-18
Wakefield are fourth after beating Catalans Dragons, who have now lost four of their five games, 30-10.