This year's tournament is held between June 17 and July 2 at four stadiums in Russian Federation and they are Spartak Stadium in Moscow, St. Petersburg Stadium, Fisht Stadium in Sochi and the Kazan Arena in Kazan.
The 8-nation tournament features the host nation, 2014 World Cup victor Germany and champions of FIFA's six continental governing bodies.
This season VAR has been tested at the Club World Cup and the U20 World Cup in South Korea and Federation Internationale de Football Association want to fast-track the video reviews for next's year World Cup.
After clashes between Russian and England fans tarnished the European championship, President Vladimir Putin approved legislation which allows authorities to hand out tougher punishment for violence at sporting events.
Russian Federation were denied a penalty after 14 minutes when New Zealand goalkeeper Stefan Marinovic appeared to bring down forward Dmitry Poloz.
It was the ideal start for the Russians in a game played at the new Krestovsky Stadium, where President Vladimir Putin and Federation Internationale de Football Association chief Gianni Infantino both gave speeches before kick-off.More news: Trump has 'no intention' of firing special counsel Mueller - White House
"This is a magnificent opportunity as a group to compete against a team from the worldwide elite", said Osorio of the Portugal game in Saturday's news conference.
Portugal forward Andre Silva says Cristiano Ronaldo is locked in for his side's Confederations Cup opener against Mexico.
"[Portugal] is one of the best teams in the world, they attack and defend very well and they are hard to stop, it is an incredible national team", Osorio said.
Group A rivals Portugal and Mexico meet in Kazan on Sunday.
Federation Internationale de Football Association will for the first time also implement a three-step procedure that allow referees to stop matches in the event of racist or discriminatory incidents - a new measure Deputy Prime Minister Vitaly Mutko welcomed as the "absolute right decision". "We are here to watch some great football", Infantino said.
Although Russia were under pressure to perform well on home soil after slipping to a record low 63rd in FIFA's world rankings this month, the country faced even more scrutiny over issues off the pitch in the run-up to the tournament.