Moyes' boys slump to late defeat in Japan
Yokohama 3 Manchester Utd 2
Jesse Lingard had scored another goal to continue his impressive run of form but, despite holding a half-time lead, United were unable to keep their advantage.
In the stadium where they won the World Club Cup in 2008, not even the introduction to great acclaim of Shinji Kagawa, who amazingly was named man of the match, could inspire United to victory, with Yoshihito Fujita netting the winner three minutes from time.
Having named a youthful starting line-up, manager Moyes suffered an early setback as David de Gea produced an acrobatic save to deny Marquinhos, only for the veteran Brazilian striker to swoop and put the hosts in front with less than 30 seconds gone.
Lingard combined with Wilfried Zaha to bring United level after 20 minutes before Tashiro's own-goal gave United a half-time lead.
Jonny Evans failed to convert decent chances either side of the interval, and United had cause to regret those misses as, with the crowd distracted by national hero Kagawa's first appearance to warm up, Marinos defender Fabio climbed highest at the far post to head home direct from a corner.
Danny Welbeck spurned a glorious opportunity to restore United's lead but Fujita had the final word.
Elsewhere, West Ham bounced back from their heavy defeat to Mainz with a 3-1 victory over Hamburg, while Aston Villa – with striker Christian Benteke playing the first half – were beaten 2-0 by Luton Town at Kenilworth Road.