Notts County have gone down 2-1 to Grimsby Town in the EFL Trophy in Harry Kewell's first match managing the club.
Kewell, who was appointed over the weekend, saw Notts throw away a 1-0 lead.
The League Two club took the lead through Lewis Alessandra in the 12th minute.
But Grimsby hit back in the second half with two goals, an 88th minute strike from Jake Hessenthaler proving the winner.
Kewell admitted his disappointment with the result after the match.
"Of course it's disappointing because you want to win the game," he told the BBC.
"They got the goal in the end, it was just a moment of lapse. Their fitness told."
Despite the defeat the Australian remans upbeat.
"I know that everyone who saw that first half saw a proper team play, I can't wait to see it evolve," he said.
"It was a good game for me to see what my players can do. I saw some very good things. We need to be that little bit more clever.
“We had the ball in certain areas and gave it away cheaply, but we didn't in the first half.
"The game isn't 45 minutes, it's 90. We have a very long way to go but these players are up for the challenge."