If the Rounds tab says that the fourth round is barely started, How does the Leaderboard tab have Yuri with 5-0?
It looks like YurlZ has won the first (and only) game in round 5 - I think there are individual settings that let you play later or multiple rounds in tournaments so long as a partner is available and has the same settings.
The rounds tab has always seemed a little goofy to me -
If you go to "games" like M57 said, Yuri did win a game in round 5.