Chelsea's assistant manager Gianfranco Zola has praised the impact of Chelsea's substitutes in their 1-0 win against Bournemouth in the EFL Cup quarter-finals.
The Blues left it late, with substitute Eden Hazard sending his side through thanks to a deflected effort that creeped in with seven minutes remaining.
The victory means Chelsea will face London rivals Tottenham in the semi-finals, after they beat Arsenal 2-0.
Per West London Sport, Zola said: “The difference was the changes that we made.
"It was a very tough game. I have to say Bournemouth are a very good team and gave us a really hard time.