With the city of Manchester claiming dominance over the English Premier League for the past two seasons, there are rather large shoes left to fill for the new managers at both Manchester United and Manchester City.
After being named successor to quite possibly one of the greatest managers of all-time - Sir Alex Ferguson - David Moyes had been left with quite the daunting task of having to take over a team that has just won the English Premier League and established itself as not only one of the greatest teams in world football but in all of sport.
David Moyes' first test as manager of Manchester United came in the form of the Singha All-Stars of Thailand. The match saw many of United's youngsters from the reserve team being called into action.
Without question the name that will be spoken of the most by Red Devils fans is that of 18 year old Adnan Januzaj of Belgium who put in a memorable performance and hinted at a bright future ahead.
New signing Wilfried Zaha also put in a good performance after coming on as a substitute in the second half. Goal scoring opportunities however were few and far between for both teams, with each only really having one or two good chances at goal.
The breakthrough however came in the 51st minute after a shot from All-Stars striker Teeratep Winothai seemed to wrong-foot Ben Amos. The match ended in a fairly dismal 1-0 victory for the Singha All-Stars, a defeat which no doubt will have left David Moyes and Manchester United fans alike feeling rather frustrated.
Another managerial debut saw Manuel Pellegrini take charge of Manchester City in his first match against South African side SuperSport United, who were also playing their first match under a new manager, in the Nelson Mandela Football Invitational.
The match saw many of City's regular first-team players on display with the likes of Joe Hart, Vincent Kompany, Aleksander Kolarov, Samir Nasri and Edin Dzeko all starting, the match also saw the debut of new signing Fernandinho and the return of Micah Richards.
The game was played at a fairly high tempo through-out, with both teams not afraid to attack and the first half ended 0-0. There were a number of changes in the second half with City bringing on Costel Pantilimon to replace Joe Hart.
The 2nd half also saw the arrival of Yaya Toure, Joleon Lescott, Scott Sinclair and James Milner. However it was SuperSport who found the opening early in the second half with Mame Niang heading in a cross past Pantilimon.
SuperSport then doubled their lead in the 81st minute with Kermit Erasmus slotting in the ball past Pantilimon. The match ended 2-0 to the hosts who claimed a historic victory over mega-rich Manchester City.
With the new managers at both Manchester clubs experiencing defeat in their first game in charge, the question is who should be more concerned?
Should it be Moyes, who's young side fell short to an All-Star, albeit less experienced team?
Or should it be Pellegrini, who's star-studded line-up suffered defeat at the hands of a team well below City's financial power? Or is it perhaps to early to pass judgement?
Whatever it may be both managers will be put to the test again as Manchester United travel to Australia to face the A-League All-Stars. Manchester City face a trip to Durban, South Africa, to face Amazulu FC, who faced United last year in a pre-season friendly which ended 0-0.
Will the Manchester giants bounce back from their shock defeats, or will they lay dormant and succumb to their opponents?
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