Avram Grant believes he has proved to the Chelsea fans that he is the master of the tactical substitution.
But victories over Arsenal, Liverpool and Manchester United were achieved with tactical switches and the addition of other players at the right time and Grant will not be afraid to do the same against United in next week's Champions League final in Moscow.
"First of all I was happy with how we started those games but in all of them something happened and we needed to make a change - I think we did it well," Grant said.
"Against Arsenal we brought on Nicolas Anelka and Juliano Belletti and changed the system. We scored two goals to win the game and could have scored more.
"Then at Liverpool in the first leg of the Champions League semi-final, we brought on Salomon Kalou and Anelka and got back into the game. It was Kalou who crossed for the own goal while Anelka pressed John Arne Riise.
"With United, we brought on Anelka, (Andriy) Shevchenko and then (Claude) Makelele at the right time after they scored from our mistake. We finished the game with three strikers and scored a late goal to win it.
"And it was the same sort of game again for the second leg with Liverpool. We were much stronger but then they scored and we had to make changes.
"Everybody thought they would be fresher because we had just had a big game against United but we brought on Florent Malouda and Anelka to change the system and we deserved the win.