Marcos Alonso admits top 4 race is out of Chelsea's hands now
The Blues were beaten by Tottenham 3-1 on Sunday.
Alonso said: "Today was a must-win and we are very disappointed. We have to fight to the end and see what happens.
"I don't think we played a bad game. We had many more chances but we didn't concentrate for the 90 minutes. In a game of this importance we can't give away three goals.
"I don't think we have had the same luck as last year. Other teams have improved and we don't have the consistency. It is what it is. We have to stand up now and fight until the end.
"Winning the last seven games has to be the target and we have to wait for others to lose."