"This is the biggest tournament of my hockey career," Varlamov said. "I've never played in the World Cup before, so it's very exciting."
Team Russia coach Oleg Znarok hasn't decided on a No. 1 goaltender, but has a history with Bobrovsky, who played for him at the IIHF World Championship the past three years.
"I don't know who is going to be No. 1, 2 or 3," Varlamov said. "All the goalies are looking good so far. I don't know who is going to be playing, who is going to be the starting goalie. I think the coaching staff, they have some ideas about it but they don't say anything to us. We're all going to be ready to play in the World Cup. It's a short tournament, so probably not all of us are going to play the whole tournament.
"The coaching staff is going to make a decision who is going to be No. 1 and then you have to take that and just be a good teammate."
Team Russia plays its first pretournament game against Team Czech Republic at Yubileyny Sports Palace on Thursday (12: 30 p.m. ET; ESPN 3, SN, TVA Sports). The teams play again Saturday at O2 Arena in Prague (10:30 a.m., ET; ESPN 3, SN, TVA Sports).
Its final pretournament game will be against Team Canada at Consol Energy Center in Pittsburgh on Sept. 14 (7:30 p.m. ET; ESPN2, SN, TVA Sports).
Znarok hasn't revealed his goaltender for the first game against Team Czech Republic, but Varlamov believes the plan is for Bobrovsky to start.
"I think [Bobrovsky] will start the first game and then we don't know about the second game and the game in Pittsburgh," he said.
Varlamov said he hopes all three goaltenders will see action in the pretournament games so they will have a chance to sharpen their skills before Team Russia's World Cup preliminary-round opener against Team Sweden at Air Canada Centre in Toronto on Sept. 18 (3 p.m. ET; ESPN, SN, TVA Sports).
"The last time I played was right before the [World Championship] in the Euro tour, so it's since the beginning of May that I [haven't] played any games," he said. "For sure you need to play at least one [pretournament] game to get ready."