United's Manchester Senior Cup defence continued with a routine group win over Oldham Athletic, as Gabriel Obertan turned in an impressive 45-minute cameo.
The French winger caught the eye with sleight of foot and devastating speed during an opening half in which quickfire goals from Febian Brandy and Sam Hewson essentially took the points, before Joshua King added late gloss with his third goal in as many games.
Brandy twice came close to scoring inside 20 minutes, but was off-target with a glancing header and a powerful low shot. Shortly afterwards a one-two with Hewson released the striker and he clinically finished. Within a minute, United's lead had doubled as Obertan found Fabio, and the Brazilian's surging run into the area presented Hewson with a simple conversion from six yards.
Oldham - skippered by United Academy graduate Kieran Lee - were simply unable to live with the dominant Reds. Robbie Brady curled a free-kick just wide, while only a telling interception prevented Brandy from tapping in Fabio's cross. On the opposite flank, Rafael enjoyed an impressive return from injury of his own. Both he and the influential Obertan were removed at the interval after important first-half roles, with Magnus Eikrem and King introduced in their place.