Monaco's dominant defense has been the key to their success in Ligue 1 this season. The team has conceded just three goals in their first seven matches, and they have also led the league in clearances per game (45.8), according to Opta data.

The defending champions' strong defensive record is a testament to the hard work and determination of their players. Monaco's backline has been impressive throughout the campaign, with center-backs Benjamin Mendy and Presnel Kimpembe leading the way.

Mendy has been a rock at the back for Monaco, making a total of 22 appearances so far this season, contributing four clean sheets and two assists. He has also shown his ability to score from set-pieces, scoring twice already this season.

Kimpembe, meanwhile, has been equally effective as a central defender. He has made 22 appearances this season, contributing five clean sheets and one assist. His aerial ability and tackling prowess have been crucial to Monaco's success this season.

The duo's partnership has been a major factor in Monaco's dominance in the league. They have helped keep opponents out of the net, allowing only three goals in their first seven games, while also providing cover for midfielders like Fabinho and Thiago Silva on the flanks.

Monaco's defense has not only been dominant but also efficient. Their high clearance rates of 45.8 per game are among the best in the league, showing that they are able to clear balls off the line quickly and efficiently.

Overall, Monaco's dominant defense is a major reason why they are currently top of the Ligue 1 table. With such a strong defense, it will be interesting to see how they fare against stronger opposition as the season progresses.