JT’s NEVER BEEN BETTER . Jose Mourinho's return was the answer to John Terry’s prayers. Mourinho said Sunday's game at the Emirates was the best Terry had ever played. That was a pat on the back for his captain but also justification for Mourinho’s faith in playing him. Terry is in a real purple patch and his reading of the game is better than ever. Part of his success comes from the way the team is set up in front of him. All of their good work means he is in prime position each time to make the telling tackle or interception. John Terry (left) was in inspiring form in the Chelsea defence as his side kept a clean sheet against Arsenal . Sportsmail's Martin Keown says the Blues skipper is enjoying some of the best football of his career . The 34-year-old defender's timing in the tackle has been impeccable for the majority this season . His decision-making is excellent and he waits for the perfect moment to get involved — there can be an element of gambling with that but it is a calculated risk. He was always able to anticipate where Arsenal wanted to play the game and stop them from doing it. As Chelsea have become harder to beat, Terry has come into his own. Following an entertaining first half, Arsenal's tempo appeared to drop after the half time break . GHOSTS OF MONACO? In the first half Arsenal played at a terrific tempo, especially down the left, but the whistle came at the perfect time for Chelsea. After the break Arsenal didn’t move the ball quickly enough. They looked mindful of the Monaco game where they lost control but here there was not enough spark. Gunners striker Olivier Giroud had a frustrating afternoon against a rugged Chelsea defence . Danny Welbeck's pace through the middle could have instead caused the Chelsea back line a lot trouble . A MISSED OPPORTUNITY . I’m a big fan of Olivier Giroud but Arsenal needed to ask a different question of the Chelsea defence. John Terry and Gary Cahill are built to deal with players like Giroud and everything was played in front of them. If Danny Welbeck had played through the middle, his pace could have unsettled Chelsea. It’s much easier to be compact when there’s no threat in behind. The Arsenal supporters were heard lamenting Chelsea's 'boring' performance at the Emirates Stadium . Despite many questioning Chelsea's tactics in the big games Jose Mourinho's team are in full control . JOSE IS ALWAYS THE BOSS . The Arsenal fans said it was boring but Chelsea are doing what they need to do to see out a championship. There is no problem with that. If anything that element of control is something Arsenal would do well to copy. Yes, there was no striker but could Didier Drogba really play three games in a row at 37? Jose just made good use of his squad. At the start of the season Chelsea played with so much expression it looked like the players were in charge. Now they look dogged, disciplined and firmly in control. There is no doubt as to who is the boss now.
Martin Keown: Danny Welbeck's pace might have unsettled Chelsea .
John Terry and Gary Cahill are built to deal with players like Olivier Giroud .
Keown says Chelsea captain Terry's reading of the game is better than ever .
The Arsenal fans said it was boring but Chelsea are doing what they need to do to win the league .
Thierry Henry: Arsenal can't win title with Olivier Giroud in attack .