Rosenior was appointed as Blues head coach on Tuesday, replacing former head coach Enzo Maresca, but didn't take training until Thursday, meaning this was his first game in charge.<\/p>\r\n\r\n
Chelsea were totally dominant in the first half, enjoying 78 per cent possession and having Charlton camped in their defensive third for most of the opening 45 minutes.<\/p>\r\n\r\n
However, Chelsea had to wait until the fourth minute of injury-time to take the lead when Jorrel Hato smashed home an impressive first goal for Chelsea.<\/p>\r\n\r\n
The head of Tosin then doubled the advantage five minutes after the restart before Miles Leaburn pulled a goal back soon after.<\/p>\r\n\r\n
Chelsea's two-goal advantage was restored five minutes later, though, through Marc Guiu and the win was rounded off in injury time with further goals by Pedro Neto and Enzo Fernandez, the latter from the penalty spot.<\/p>\r\n\r\n
Earlier, FA Cup holders Crystal Palace were knocked out in stunning fashion by non-league Macclesfield FC in one of the greatest upsets in the competition\u2019s history.<\/p>\r\n\r\n
Macclesfield FC delivered the greatest upset in Emirates FA Cup history as they bridged a gap of 117 league places to stun defending champions Palace in a magical third-round tie.<\/p>\r\n\r\n
Paul Dawson\u2019s towering header and Isaac Buckley-Ricketts\u2019 genius flick ensured the National League North team are the first non-league side to beat the Cup holders in 108 years.<\/p>\r\n\r\n
The 117 league places between the sides at kickoff represent the largest gap of any upset in FA Cup history and it was the first time a non-league side scored twice against the FA Cup holders since Runcorn v Preston in 1939.<\/p>\r\n\r\n
In another action, Manchester City didn\u2019t hold back against Exeter City, scoring a phenomenal 10 goals including one from Antoine Semenyo, who made his debut the day after signing for the club from AFC Bournemouth.<\/p>\r\n\r\n
The 117 league places between the sides at kickoff represent the largest gap of any upset in FA Cup history and it was the first time a non-league side scored twice against the FA Cup holders since Runcorn v Preston in 1939.<\/p>\r\n\r\n
Semenyo also set up Rico Lewis \u2013 making him the first player to score and assist on his Man City debut since Sergio Aguero, in 2011, in an impressive first game.<\/p>\r\n\r\n