United got the Dallas Cup off to a great start with a 2-0 success against home favourites FC Dallas.
Will and Michael Keane provided the goals but it could be a tough tournament for the Reds in the conditions after only taking a small squad to Texas.
Will Keane showed his finishing prowess after 10 minutes to cap an imposing opening spell by Warren Joyce's side by calmly firing past keeper Richard Sanchez. Ryan Tunnicliffe, who was later booked, should have added a second from a neat free-kick, and Will Keane also had a couple of decent efforts. However, it was his twin Michael Keane who rose highest to head home a Luke Giverin corner at the far post early in the second half.
Sam Johnstone was impressive in keeping a clean sheet but was fortunate to see Danny Garcia spurn a glorious chance by clipping into the side-netting with the goal at his mercy after rounding the keeper. Larnell Cole made his return from injury and recent signing from Manchester City, Frederic Veseli, also started.
Will Keane, the only striker in the party, referred to the need for the players to do "cool-downs" afterwards and the next game will take place at 2pm local time against Santa Clara Sporting, late replacements for CS Cartagines, who experienced travel problems.