Holtby says Spurs prove their top four credentials.
"This was a big test, absolutely, and I think we're in a good way and playing a wonderful season," the German said.
"I think the manager was proud of us and how we committed to the game and how we fight in our game week in and week out. We've had a lot of games now in the last couple of weeks so everyone's just done a fantastic job.
"We have to keep on progressing. It's very early in the season, we have to keep working hard. We've got a couple of games now where we have to get some points and stick up top and defend our place up in the top four."
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