Hundreds of World Cup and Team USA fans gathered on City Hall last week to cheer on the home team and the city is hoping even more crowd the plaza today.
The city is hosting its second World Cup viewing party for today's 4 p.m. match between Team USA and Belgium.
Team USA earned enough points in group play to move on today's "knock out round" game. The loser is out of the tournament, but the winner moves within three games of claiming the world's most sought after trophy.
"I think we'll have a good crowd there," said Mayor Marty Walsh, a sports fan who showed up in a Team USA shirt to last week's watch party. "The first one went well. If the United States keeps winning, we're going to have [Boston Police] Commissioner Evans pulling me in his office to talk about the crowds."
Walsh said city officials are moving the large screen to a different end of City Hall Plaza to improve sight lines and viewing angles.
Joining fans and offering give-aways will be the New England Revolution's street team, the Battalion, their mascot Slyde, and the Rev Girls.
Follow Michael Naughton on Twitter@metrobosmike.