USA Sevens rugby tournament kicks off at Sam Boyd Stadium

Looking ahead to a big weekend in sports here in Las Vegas, one of those events is the USA Sevens rugby tournament.

This year there are 28 international teams competing, including 16 men's and 12 women's teams.

80,000 fans are expected to attend matches, and last night was the Parade of Nations on Fremont Street, which is always a visual spectacle.

GALLERY | USA Sevens Rugby Parade of Nations

The tournament is one of the most popular stops on the circuit for most of these professional players, especially the Americans

Team USA will take on Samoa tonight at 5:30 and then Chile at 8:30. Pool play will wrap up Saturday and teams will fight it out in the finals Sunday.