Arsenal manager Arsene Wenger said his side would have to "forget the title race" after their 2-1 defeat by north London rivals Tottenham.The Gunners are now six points behind Premier League leaders Chelsea with four games to play. [LNB]"We have to forget the title race and play to finish as high as we can," said a clearly disappointed Wenger, who rued injuries which have weakened his side. [LNB]"You never know but it looks very unlikely now." [LNB]Arsenal had been unbeaten in their last eight league matches, earning 22 points out of a possible 24, a run which had put the Gunners in with a chance of winning their first league title since 2004. [LNB]However, Tottenham's defence, boosted by the return of captain Ledley King after a seven-week absence with a thigh injury, proved difficult for Wenger's men to break down.[LNB] It's a shame that injuries had to end the season again and judging from today you can easily see how much the loss of Van Persie damaged Arsenal's season GunnerGetInjured Injuries have decimated Arsenal this season with Robin van Persie, Cesc Fabregas, Andrey Arshavin, William Gallas, Johan Djourou, Alex Song, Aaron Ramsey and Kieran Gibbs all missing at key times. [LNB]"We have made progress this season but had too many players missing tonight," said Wenger, who welcomed Van Persie back to his substitutes' bench. [LNB]"You need a miracle to make it happen like that. Tonight our weaknesses were exposed." [LNB]Wenger did bring striker Van Persie off the bench late on. [LNB]And the Dutchman, who has been out for five months since rupturing an ankle ligament while on international duty, showed what Arsenal have been missing, forcing Heurelho Gomes into three stunning saves. [LNB]But Wenger admitted conceding the second goal had been the killer blow: "When you look at the way we conceded the second goal that is not good enough if you want to challenge for the title." [LNB]Spurs suffered a 2-0 defeat by Portsmouth in the FA Cup semi-final at Wembley on Sunday and manager Harry Redknapp was delighted with the way his side responded to that setback. [LNB]"It was a great win because we came here on the back of a disappointing day on Sunday," said Redknapp. [LNB]"To lift ourselves after that and turn in a performance like that said so much for the players, especially when we were so patched up." [LNB]"All round it was a great night for us, everybody worked hard and did a great job." [LNB]The victory left Spurs one point behind fourth-placed Manchester City in the Premier League, although their next two games are against Chelsea at White Hart Lane before going to Old Trafford to face Manchester United. [LNB]"It gives us a big lift for Chelsea, which will be another difficult game but on the back of this but we will go into it in great confidence," said Redknapp. [LNB]"We have been on a great run, that's six out of the last seven we have won in the league."