Christian Pulisic has hailed Frank Lampard for combining a mix of youth and experience at Chelsea this season.

The Blues are on a six-game winning run after beating Ajax in the Champions League on Wednesday.

"It's tough to say why [things have changed]. I think we put a lot of hard work in and throughout the game, and at half time, we just said to keep going, keep fighting because we're doing well and the subs are going to come in for tired guys and really make a difference," Pulisic said at the Johan Cruijff ArenA.

"Of course, I was given another opportunity to go in and the manager told me, 'go in, make an impact, make a difference' and I'm happy I was able to help a little bit with that.

"I think we have a great mix of youth and experienced players, and I think that's the reason why we've been getting great results lately. I think that's coming together, we have a great balance.

"Team spirit definitely doesn't need to be questioned. It's there and we're going to keep going. Being the only American, it's nice; I can go with some of the French guys, the Brazilians. It's good, it's a good mix and I've been really close with everyone so it's great just getting to know all of the guys.

"Now we've got six in a row, we want to keep going, keep fighting and keep it up and get the best results we can. He (Lampard) says that all of the time, we're a team, we need every single player on the roster, he's happy and I'm really happy with how it's gone."