Frank was delighted after their 2-0 win against Sheffield United.
He said: "It feels so good. We haven't won the last nine games and I just said to the boys: 'Please don't do that to me or yourselves again'.
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"It wasn't a fantastic performance today, but I think it was good. It's been the most challenging season with injuries and everything with Ivan (Toney).
"It has been hard, and it reminds one why it is the best league in the world. It is so difficult."