The Premier League season has reached the 4th week, and there have been ups and downs for almost all the teams. Liverpool, Chelsea, and Watford are all on maximum points, and they wouldn’t have achieved that without the contributions of some key members of their squad, here are our best players for week 4. Alex Mc-Carthy – Goalkeeper,  Southampton Alex McCarthy has moved above Fraser Forster as Southampton’s first choice. At first, I was taken aback by the decision to make McCarthy first choice over Forster, but the 28 years old has proved to be a hit since he was named first-choice goalkeeper and last week, he helped the Saints to their first win of the season. Marcos Alonso – Left back, Chelsea Chelsea have started the campaign under a new manager, and Marcos Alonso is still as impressive as ever. He has been one of the best attacking left backs in the league since he joined in 2016, but the season he has added goals and even more assists to his game. He takes our left back spot ahead of Andrew Robertson. Craig Cathcart – centre-back, Watford Watford have made a solid start to the new league season, and much of that success can be attributed to their defence. One of their most important defenders is Craig Cathcart, and he showed yet again last weekend why he is so highly rated. After falling behind to an own goal against Tottenham, he helped the Hornets keep things tight at the back as they came back to beat the Lilywhites 2-1 and maintain their 100 percent record, including scoring the winner. Virgil van Dijk – centre-back, Liverpool Van Dijk has been so good since he joined Liverpool in January that nobody talks about the £75 million fees it took to sign him from Southampton. He showed his class against Leicester City again at the weekend and was it not for a howler from Alisson, Liverpool would still have not conceded a goal this season. Kyle Walker – Right Back, Manchester City Kyle Walker is another player who made a big-money move last summer and he helped Pep Guardiola win his first Premier League crown. He remains one of the best right backs in the country, and his goal last weekend proved to be the difference between 3 points and one point for Manchester City. Fellaini – Center Midfield, Manchester United Manchester United fans were disappointed that Fellaini was offered a new deal this summer, but Jose Mourinho knows just why the Belgian should be kept at Old Trafford. Following back to back losses, Mourinho played Fellaini against Burnley and he helped the Red Devils to a first win in three attempts. Jean Seri – Center Midfield,  Fulham Seri rejected Liverpool, Chelsea, and Arsenal to sign for Fulham this summer, and it has taken him time to adjust to the Premier League, but the Ivorian has been impressive this past two weeks. He scored his first goal against Burnley and helped the Cottagers to a draw last weekend with impressive displays from midfield. Sadio Mane – Left midfield, Liverpool This season seems to be Sadio Mane’s at Liverpool as it is hard to stop the Senegalese from scoring at the moment. He scored his fourth goal of the season against Leicester City, and although Liverpool were outplayed for much of the match, the goal still proved important as they earned a 2-1 win. Rachid Ghezzal – right midfield, Leicester City Leicester City signed Ghezzal to replace  Riyad Mahrez this summer, and the former Monaco man has a huge boot to fill. However, he has not started badly. He impressed against Liverpool as he constantly looked like the player who is likely to make things happen for the Foxes and he got the goal that his performance deserved. Romelu Lukaku – Striker, Manchester United Manchester United did not start the season well, but it appears that Romelu Lukaku has taken responsibility and his double against Burnley has definitely helped to lift moods around Old Trafford. That is his 3rd league goal this season, and he could be in the race for the Golden boot again. Aleksandar Mitrovic – striker, Fulham Newcastle fans would be looking over at Fulham and wonder why Rafa Benitez sold Aleksandar Mitrovic. While the Magpies have scored just 3 goals this season, the Serbian has netted four times in as many Premier League games, if he continues this way, he can score up to 20 goals by the end of the season.