#2 Defensive problems faced by Chelsea

On Wednesday, Chelsea suffered a horrific defeat by the hands of Wolves. The 2-1 scoreline was enough to make the anti-Chelsea fans happy and the internet celebrated at their fullest. It was a bad defensive display by the Blues, and they paid the cost for it.
Chelsea have conceded six goals in their last 4 games, scoring just 4. David Luiz and Rudiger have registered an insane amount of passes in games this season, and they are said to be perfect for Sarri's style of play. However, their inconsistent performances and silly defensive errors have cost Sarri's side vital points.
Chelsea fullback Marcos Alonso tops my list of the most overrated players currently, the reason being his below average performances for Chelsea. The Spanish player was deployed as a left wing-back under Conte, but he has switched back to playing as a fullback under Sarri. It is a rare sight to see him track back and defend, leaving the whole left side empty for the opposition to counter attack, and this creates problems for David Luiz and Jorginho.
Sterling has the pace to get past the best of fullbacks, and it won't be much difficult for him to outrun Marcos Alonso. Alonso's game has drastically fallen this season, as he offers no defensive cover, and neither has he provided any assists this season.