Neil Warnock was happy with his side's determination as the Teessiders came from behind to beat Coventry City.
"I was pleased tonight," he said.
"It took a bit of getting used to, but all credit to them - they stuck at it. I thought there were some good characters.
"I think we're still improving, and there's a long way to go - but that's how you come to places like this and graft out points."