Brentford boss Thomas Frank admits his players have surprised him this season.
The Bees are chasing European qualification.
Frank said, "That shouldn't be possible. But on the other hand, it's possible because it's football, and that's the beauty of it.
"No matter how big the difference is financially, there is always a chance when a match starts.
"I feel we have found a way to be competitive in the Premier League, but also a way to be competitive against top six teams, where we make some small changes compared to other games. That may also be the key."