Before the game started, Antonio Conte made a freaky decision of playing Michy Batshuayi on such an important occasion, which did raise doubts as to whether or not Chelsea will win this one.
Arsenal's hopes of maintaining Arsene Wenger's flawless record in qualifying for the Champions League are slim - seven points adrift of City but with a game in hand.
Chelsea will return their focus to the Premier League this coming week with a meeting with Southampton at Stamford Bridge on Tuesday. "In the last 30 minutes I made a decision to put on Eden and Diego and then Cesc who was also very important for us", he added.
Costa is now on a five-match run without a goal in the Premier League; his longest goalless streak in league competition since a six-game run between December 2012 and January 2013 in the Spanish Liga with Atlético de Madrid.
"If we are able to take the right player to improve this squad and to continue to work with these players, we can improve for sure".
"I feel we're mentally strong and that we've learnt from past year".
"In football there is always a part of luck, and I'm still thinking that after that game because we tried our best, but unfortunately they were more clinical than us".
"All top players are selfish and if he improves that in future then he will be unstoppable and be whatever he wants to be".
Midfielder N'Golo Kante picked up the PFA Player of the Year Award on Sunday after an outstanding campaign.
"N'Golo is a silent leader", he said.
Chelsea have gone 10 Premier League games without keeping a clean sheet for the first time since December 1996 (13 games).
"He leads with good examples. But these two seasons, and his award, will bring a lot of confidence".
- Mark Austin (@markaustintv) April 22, 2017Jenas claims Spurs should have won because they had more possession.It's goals that count, you mug.Lamps and Shearer put him in his place.
Defender Cesar Azpilicueta revealed his team's winning mentality, exhibited once again at Wembley, is something drilled into new players when they arrive. This is something you can not buy.
"Gary trained yesterday and also today", Conte said.
Conte stopped short of confirming he would restore both Hazard and Costa to his starting team on Tuesday, saying: "I have another day to decide best 11 - they are in good condition, good form".