Viktor Gyokeres had his best day for Arsenal as they ruthlessly underlined enormity of Igor Tudor’s Tottenham Hotspur rescue mission.By the time Gyokeres has bagged his second, and the visitors’ fourth, in this demolition derby any question marks over Arsenal‘s stomach for a title fight had been swatted aside as easily as Spurs‘ weak defence.Gyokeres showed why Arsenal paid £65million for his services last summerGettyIf Tudor didn’t realise the job he has on his hands, he does nowGettyThe way in which Gyokeres bullied young Archie Gray to get himself into position to bury his shot past a helpless Guglielmo Vicario was as brutal as the Gunners’ takedown of their north London rivals.Before the game, Tudor told his players in his programme notes there were ‘no excuses’ and the home fans did their best to whip up an intimidating atmosphere.The hope was that having thrown away a 2-0 lead at Wolves in mid-week and then seeing Manchester City cut their lead at the top to just two points, Spurs would be be able to cash in on any Arsenal anxiety.To be fair to Tudor, who deployed his favoured three at the back, his side were competitive in a first half played out in a cauldron-like Tottenham Hotspur Stadium.Even after falling behind to Eberechi Eze’s 32nd minute opener, the hosts were able to hit back through Randal Kolo Muani within two minutes, albeit thanks mainly to an uncharacteristic Declan Rice mistake.But from the minute Gyokeres unleashed a venomous shot from the edge of the penalty area into the far corner two minutes after half-time to restore Arsenal’s advantage there was only ever going to be one winner.Knowing goal difference could yet play big part in the destiny of the title, Mikel Arteta was in no mood to let Spurs’ shoddy defending off the hook and no sign of him putting the handbrake on as he had been accused off in recent matches.Unlike in some of Thomas Frank’s final matches in charge Tudor’s players could not be accused of lacking in effort, but there was not so much a gap in quality between the two teams as a chasm, particularly when it came to the basics of keeping the ball out of their net.The ease with which the excellent Bukayo Saka waltzed through Spurs’ three centre backs in the build-up to Eze’s second goal will have set alarm bells ringing for the new man in what has become a poisoned chalice of a dugout.Missing more than a dozen players through injury and suspension, there was a resigned look on the face of Tudor come the full-time whistle, by which time most of the home fans had headed for the Tottenham High Road.Eze has six Premier League goals this season – five of them against Spurs having scored a hat-trick in the Emirates Stadium fixture back in NovemberGettyKolo Muani’s equaliser saw the two sides go in level at half time, but Arsenal showed their class after the breakGettyThe Gunners are five points ahead of City, but have played a game moreAFPThe game was briefly halted by a lone blue flair thrown into David Raya’s goalmouth before being extinguished as quickly as Spurs dreams of a first victory over their neighbours in eight attempts.The return of captain Cristian Romero, assuming he can stay out of trouble with referees, will help Tudor shore up a defence that simply could not handle a Gyokeres, who suddenly looked every inch a £65m player.The defeat coupled with West Ham’s draw against Bournemouth 24 hours earlier leaves Spurs now just four points above the relegation zone.Full of problems – TudorIn a brutally honest verdict of where Spurs are at, the interim boss said: “We need to start working hard, but hard and seriously and change the habits and try to resolve it without problems.“Because now in this moment, the team is full of problems, that’s very evident.“The only key is work on the training, day by day be humble, stay down, see what you can do.GettyTudor was happy to share the list of problems greeting Spurs post-match[/caption]“We need to start running more, we need to be more aggressive, we need to start to win the duels.“We need to be more compact, we need to be more concentrated.“These are the keys, working on every day in the training to change bad habits.”Spurs fans hate being reminded of the fact they finished a lowly 17th last season.Unless Tudor can live up to his reputation as a firefighter, they may be grateful for 17th after they play their remaining 11 league games.