Kai Havertz has admitted it is becoming a struggle to keep up with the number of games on Chelsea's calendar.
The Blues are regularly playing two games per week between the Premier League, FA Cup and the Champions League, being in the final and semi-final of the two cup competitions respectively.
Thomas Tuchel's men are very much keeping up, fourth in the Premier League and winning their battle to finish in the top four, while bagging an away goal and a 1-1 draw in the away leg of their Champions League clash with Real Madrid.
Chelsea's latest win saw them beat Fulham in the Premier League on Saturday afternoon, with Havertz scoring both of the Blues' goals.
But after the game, the in-form German, who has already made 40 appearances this season, admitted the pile-up of games is becoming difficult.
"It's very hard," he told Sky Sports. "You have to concentrate every three days on another game and another competition. It's hard.
"When you come home, you have three days to regenerate. We now have three days between for the next game.
"It's very hard but it's the reason we are professionals and we have to be professional like this."
Comparing it to his Bayer Leverkusen days, he added: "I played Europa League in the recent years. But we have two more teams in the league, one cup more.
"You have more games, it's hard, but we are happy to play in these competitions."
Speaking about the win and his goal, Havertz added: "I think [it is] very important. This win is crucial for us. Now on Wednesday, we have another tough game, but we are very happy with the win.
"It felt good to score very early, so it gave me a bit of confidence. It is always good to score and I am very happy to help the team. I hope I can continue on Wednesday."
