Sam Vines' first international goal proved to be enough for the USA at Children's Mercy Park in Kansas City.

The eighth-minute header helped USA make a winning start in Group B, in which it sits behind Canada, which crushed Martinique 4-1 earlier in the day.

The USA are six-time Gold Cup champions, including winning two of the past four editions – in 2013 and 2017.

They went close to an opener in just the sixth minute, but Walker Zimmerman's volley from a corner hit the crossbar.

However, they opened the scoring just three minutes later as Vines headed in powerfully from close range after Gyasi Zardes' pass from inside the area.

The USA continued to threaten and went close to doubling their lead in the 66th minute, but Nicholas Gioacchini hit the post with a side-footed effort.

Gregg Berhalter's side are next in action on Thursday, when they take on Martinique.