France vs. Brazil, 11.15 a.m. EST (Group B)

France makes their Olympic debut in front of what should be a packed crowd at Pierre Mauroy Stadium. France has emerged as the main competitor to Team USA for the gold medal and it adds 7ft 4in Victor Wembanyama to the roster, fresh off winning the NBA Rookie of the Year award with the San Antonio Spurs. France still has mainstays Rudy Gobert, Evan Fournier and Nicolas Batum, as well as former NBA first-round pick Guerschon Yabusele. A player to watch in this tournament is 20-year-old Bilal Coulibaly, a staunch defender who just finished a solid rookie season with the Washington Wizards.

The Brazilians were a power in previous Olympics but had to win a qualifying round against Latvia to get to the Olympic Games Paris 2024. Former first-round pick Bruno Caboclo along with Golden State Warriors forward Gui Santos will battle Wembanyama and Gobert in the paint.

Greece vs. Canada, 3 p.m. EST (Group A)

Perhaps the most intriguing matchup of the day, the Greeks are led by two-time NBA MVP Giannis Antetokounmpo, who put the team on his back and led it through the qualifying tournament to reach their first Games since Beijing 2008. Antetokounmpo is an unstoppable forward in the paint with the ability to run the floor like a point guard. Thomas Walkup is also a key player on the Greek club, which has the capability of winning a game in this group phase, especially if Antetokounmpo can score in the paint and reach the free-throw line.

The Canadians made their first Olympic appearance since Sydney 2000 and are loaded with 10 NBA players, including MVP candidate Shai Gilgeous-Alexander and tough defenders Dillon Brooks and Luguentz Dort. NBA champion Jamal Murray is also on the roster, along with former lottery pick RJ Barrett. The Canadians may have their most talented team ever.

Gary Washburn is an Olympic Channel correspondent and National NBA Writer for the Boston Globe.