Phil Jones was delighted to make his return to action for Manchester United - even if he was unable to stop them slipping to a defeat against Galatasaray.
The defender made his first appearance of the season in the UEFA Champions League Group H clash in Istanbul, playing the full 90 minutes after enduring a lengthy spell on the sidelines.
The England international suffered a back problem in the summer and then needed knee surgery after a pre-season training setback.
"I'm delighted. I've had a torrid six months in and out of the team and fitness," he told Sky Sports. "I was delighted to get 90 minutes and I hope I can push on now.
"It definitely got harder. It was a heavy pitch."
Manchester United - who had already qualified for the knockout stages of the competition as Group H winners - were beaten on their travels by a Burak Yilmaz goal, his header after 54 minutes coming as the visiting defence fell asleep at a set piece.
"We should have switched on and dealt with that ball," Jones admitted. "We got punished at a set-piece which is not our game. We shouldn't have done that."
Asked if the team had briefly gone to sleep, he added: "Possibly. We need to look at the video and see where went wrong.
"We were a bit unfortunate not to take the lead - it wasn't our night."
Chris Atkinson and Sam Togwell gave Chesterfield a 2-0 interval lead and although Kaid Mohamed pulled one back, Marc Richards and Jack Lester completed an impressive performance by Paul Cook's team.
Chesterfield started well and Atkinson gave the home side a deserved lead in the 17th minute when Tendayi Darikwa set him up to score with a low right-foot shot from just inside the area.
Darikwa was also involved in the second when his shot came back off the bar and Togwell dived forward to head the rebound in from eight yards.
Cheltenham were back in it after 57 minutes when Mohamed headed in an in-swinging corner but two minutes later Chesterfield scored a third when Atkinson put Richards through to fire over Brown.
The contest was over in the 75th minute when Lester bundled a corner in at the back post to score with his first touch after coming on as a substitute.
