He may have been brought in as a midfielder, but Liam O'Neil started his Spireites career covering at right-back as his side beat Millwall 2-0 on Saturday.
Jay O'Shea was the goalscoring hero on the day, grabbing both of the goals, but plenty of rearguard action was required in the second half as O'Neil helped his side retain their lead and earn their hard-fought clean sheet.
"We dug in deep at the end," he said. "It's a difficult place to come and the fans get behind them and they're a very direct team but O thought we handled it a Tommy [Lee] made a great save, we're thankful for that and we move on to the next game and that's three points down."
O'Neil explained how he got thrown into the right-back position for the match in the capital, where he slotted into an unfamiliar backline seamlessly.
"Drew [Talbot] got injured on Friday and we didn't have anyone to come in. The manager spoke to me and he has a lot of trust in me to do a job there and I've done it to the best of my ability.
"It's a good start to get a clean sheet and next week we need to do better in the second half and go from there."
The 22-year-old's debut came at the end of his first week at the club, and O'Neil is enjoying his time at his new club.
"The boys have helped me settle in straight away," he said. "That's always good and we've done the job by getting the clean sheet.
"It's not been hard to come here, I think there's a great set-up at Chesterfield. Obviously West Brom's a little bit different but here the stadium's great and the facilities are good so I can't see why we won't be up there at the end of the season.
"I'm just taking it all in at the moment, enjoying myself and when you're getting the three points that's all the better - long may that continue."