up Drogba fires Chelsea challenge LONDON — Third-placed Tottenham Hotspur is looking anxiously over its shoulders after a 1-0 Premier League defeat at Everton continued an alarming slump in form. A first-half goal by Nikica Jelavic was enough for Everton to condemn Spurs to a third consecutive league defeat after it had moved into contention for the title just a few weeks ago. It is now only four points above Arsenal, which hosts Newcastle United Monday, and Chelsea which beat Stoke City 1-0 Saturday courtesy of a Didier Drogba goal. Liverpool slumped to a 1-0 defeat at Sunderland while at the other end of the table Bolton Wanderers enjoyed a 2-1 victory over Queens Park Rangers to move out of the bottom three. In another relegation clash, Blackburn Rovers won 2-0 at Wolverhampton Wanderers while Aston Villa eased away from the danger zone with a 1-0 win over Fulham at Villa Park. Drogba earlier scored his 100th Premier League goal as Chelsea maintained the pressure on Arsenal in the race for fourth place with a win over 10-man Stoke City. Drogba bagged his eighth goal of the season after 68 minutes of a tense encounter at Stamford Bridge as Chelsea notched its second victory since last week's sacking of manager Andre Villas-Boas. The win saw interim manager Roberto Di Matteo's side go level on points with Arsenal. Stoke, who were reduced to 10 men following the dismissal of Ricardo Fuller for a stamp on Branislav Ivanovic, slipped to 10th. Bolton's dramatic win over QPR reignited the debate over goal-line technology by a blunder from match officials. An 86th-minute winner from substitute Ivan Klasnic bagged a vital three points for Bolton after Djibril Cisse's equalizer looked to have earned a draw for Rangers following Darren Pratley's opener. But the main talking point from an entertaining game was a disallowed goal from QPR center-back Clint Hill after 20 minutes. Replays showed Hill's powerful header had clearly crossed the goal-line yet despite QPR protests, neither the linesman nor referee Martin Atkinson were inclined to give the goal and Bolton escaped. Fuming Rangers coach Mark Hughes said the incident was further proof of the need for goal-line technology, which world governing body FIFA have said they hope to introduce by the end of this year. Inter tastes victory Napoli beat Cagliari 6-3 to go joint-fourth in Serie A while Inter Milan won for the first time in 10 games with a late 2-0 success at Chievo Friday, prompting tears from coach Claudio Ranieri. The victory moved Inter up to sixth with 40 points, two more than AS Roma.