He was a controversial player in his career, having multiple disciplinary issues during his time at Man City and Rangers, but was a relaxed figure in the dugout.
Barton was a surprise appointment by the League One outfit, but has utilised his contacts in the game to make 10 signings for the team this summer, including Ched Evans.
The controversial striker had multiple chances in the game, but failed to convert his best chance following on from Conor McAleny's long range effort which was parried by the Wimbledon goalkeeper.
The home side were in control for the majority of the match, however their inability to finish their chances came back to haunt them when Wimbledon took the lead through Joe Pigott's effort after 60 minutes.
While he was undoubtedly a talented player, it may be that this result shows that Barton will take longer to take to the management side of football than playing.