People from all around the world watch the ATP Tour’s biggest stars. But this week, Andrey Rublev and Roger Federer were the fans, visiting notable sports venues. 

Rublev, who lost in the quarter-finals of last week’s Barcelona Open Banc Sabadell, has remained in Spain. And on Tuesday, the Russian got an inside look at Camp Nou, the home of FC Barcelona.

“It’s a huge stadium,” Rublev said. “I was watching [matches here] a couple of times live and it’s amazing when it’s a full crowd. It looks like the stadium is never ending.”

The 23-year-old admitted he doesn’t watch every match, but he still enjoys supporting the club.

“When it’s something big, I follow. Like a final of Copa del Rey, for example,” Rublev said. “I wish them all the best. I hope they’re going to win La Liga.”

Federer visited a different kind of arena. The 103-time tour-level champion toured the home of Swiss ice hockey team SC Bern.

NHL stars who have played for the club include John Tavares, Roman Josi and Daniel Briere among others. Federer posted an Instagram story sitting in front of the locker of Thomas Rufenacht.