Roy Millar's side were defeated in the Milk Cup Elite final

Tommy Stewart (12) put NI ahead only for Rodrigo Lopez (21) to equalise.

Davies (32, 45 & 59) made it 4-1 with Johnny Steele (82) netting before a late red card for NI's Paul McDowell.

Jeffren Bermuda's goal gave Barcelona a 1-0 win over Chelsea in the Premier decider while Lyngby beat CSKA Moscow on penalties in the Junior final.

Two penalties left the Elite final at 1-1 before the outstanding Davies won the game for the Americans.

The Boston student hit a superb shot into the bottom corner on 32 minutes before poking home on the stroke of half-time.

A 59th minute penalty sealed his hat-trick and Steel's close-range finish was merely a consolation for the hosts.

McDowell's poor challenge in the last minute resulted in a straight red card and ended a disappointing night for Roy Millar's team.

Meanwhile, Brazil ended their championship on a high note, beating Serbia and Montenegro 5-0 at the Ballymena Showgrounds.

Wednesday - Elite results
N Ireland 2-0 Brazil
USA 1-0 Serbia and Montenegro

Premier results
Cherry Orchard 0-3 Manchester Utd; Livingston 0-1 Barcelona; Cruz Azul 0-1 Chelsea; Co Down 1-3 Porto

Thursday's Premier semi-finals - Barcelona 2-1 Manchester United; Chelsea 2-2 Porto (Chelsea won 5-4 on penalties)

Junior results
Shamrock Rovers 0-5 Hearts; Lyngby 0-0 Everton (Lyngby won 4-3 on penalties); CSKA Moscow 2-1 Ipswich Town; Shelbourne 1-1 Crewe Alexandra (Crewe won 4-2 on penalties)

Thursday's Junior semi-finals - Hearts 0-0 Lynby (Lyngby won 5-4 on penalties); CSKA Moscow 1-0 Crewe Alexandra

Friday's final results
Elite: Northern Ireland 2-4 USA
Elite 3rd place play-off: Brazil 5-0 Serbia & Montenegro
Premier: Barcelona 1-0 Chelsea
Junior: CSKA Moscow 0-0 Lyngby (Lyngby won 4-3 on penalties)