The 2-0 victory, courtesy of Robin van Persie's double, clinched a first piece of silverware for Moyes since he became United boss.
"It's nice for David to start off with a victory and a trophy," Old Trafford legend Law told talkSPORT. "It's nice to get a competitive game under the belt so soon and the fact he has won a trophy. Hopefully, it is the first of many."
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