Christian Pulisic says he has a "nice connection" with Chelsea teammate Michy Batshuayi.
The pair played together at Borussia Dortmund and have now brought that partnership to Stamford Bridge.
Pulisic produced a stunning piece of play to set-up Batshuayi for the winning goal against Ajax on Wednesday.
Of the Belgian striker, Pulisic said: "He's easy to play with, we've played together for a while and we have a nice connection.
"It was crazy, we were able to help with the goal and he made a great finish. The whole team has come together and done a good job.
"It's great man. We had five wins in a row before this, now it's six, another away win, big in the Champions League. We want to make it seven now and confidence helps you to keep it up and keep going.
"It was a really tough match for most of it. In the end, it opened up a little bit, but we worked really hard and we deserved to get a result."