On Sunday, we watched as Chelsea triumphed over their ex-boss Jose Mourinho and his Manchester United side. Alvaro Morata's lone header separated the sides at the end of the ninety minutes in what was a huge victory for Antonio Conte and Chelsea. The win brought Chelsea within a point of second place United and third place Spurs, who both sit with 23 points. Heres are some important things we learned:

1. N'Golo Kanté is even more vital for Chelsea than we thought.

The return of N'Golo Kanté was the feature of many headlines before the match, and for good reason. While he wasn't paired with his ex-Leicester and current Chelsea teammate Danny Drinkwater (as many sources thought before), Kanté did what he does best in controlling the midfield for Chelsea.

His interceptions and defensive work rate secured up the leaky midfield that was overrun in the Champions League against Roma in the week before the game. However, Kanté, while remaining a defensive-minded player, showed signs of improvement elsewhere in his game. Kanté had a higher pass completion rate (89%) vs United than any other game he's played against the top six in the league this season (stat from WhoScored.com). Not only this, but Kanté also attempted more long balls (5) than he has all this season.

This improvement in passing comes from the hard work of Tiemoué Bakayoko. Last season, on Chelsea, Nemanja Matic (now on United) sat in a deep role while Kanté pressed and ran to force turnovers and win the ball back. Bakayoko, unlike Matic, is playing a more box-to-box role forcing Kanté to drop in and receive the ball from defenders more than he did before. This allows him more time to make decisions and also leads to him getting the ball more.

Kanté on the ball vs United on 5 November

2. Jose Mourinho is playing too defensive despite his side having plenty of attacking firepower.

In the beginning of the season, United's fantastic attacking football convinced many fans and pundits alike that they could go all the way to win the league. Despite Mourinho being a traditionally defensive coach, in the beginning of the season, it looked like United's attack was good enough to carry them to the title.

Recently, Mourinho has chosen to play far more defensively, and since, his attack has been lackluster. In the Champions League and the Premier League, United have had few convincing wins since September. This has many labeling his game as "parking the bus". Obviously Mourinho and United can't win the league choosing to play all-out attack or all-out defense, but can he find a balance before its too late to catch up to City?

Paul Pogba receiving treatment for an injury against Basel

3. Man. United miss Pogba dearly.

Paul Pogba was and will be one of the first names on United team sheet when he returns from injury. With him, United haven't lost a game this season. Since Pogba has been injured, Manchester United have become very stagnant. Despite winning five on-the-trot right after Pogba's injury, their style of play has been far more defensive and distribution to the forwards from the defense has been poor.

With Pogba, Mourinho's side averaged 14.8 chances a game, without? 7 (stat from Sky Sports). Why? Nemanja Matic may supply strength and discipline the midfield, but Pogba's vision and range of passive have seen him missed dearly, especially by United's attackers. Is he United's best player?