Ivanchuk is currently the 12th highest-rated chess player in the world with an elo of 2746. Navara is the 74th highest-rated chess player in the world with an elo of 2654. According to my chessbase database, the two GM's have played five games against each other in their chess careers prior to this rapid match in Prague. Ivanchuk has won one game against Navara and the remaining 4 games have been drawn.
Game 1 of the Navara-Ivanchuk match was played today (May 27,2009) in Prague. Ivanchuk had the White pieces. The opening was a Grunfeld Defense:Exchange variation and Ivanchuk won the game in 44 moves. You can play through the game move by move by going to this link: http://www.chessbase.com/newsdetail.asp?newsid=5467
(You need the Abode flashplayer installed on your computer to do so). You can also play through the moves of this game below at the bottom of page one of my blog. Just click on the arrows to move forward or backward through the game. I have analyzed this game using the strongest chess program in the world, Deep Rybka 3.