Federer has only lost on grass a handful of times in the last 9 years (2011 Wimbledon quarterfinal to Jo-Wilfried Tsonga, 2010 Wimbledon quarterfinal to Tomas Berdych, 2010 Halle final to Hewitt, 2008 Wimbledon final to Rafael Nadal and now this 2012 final loss to Haas). Federer won Wimbledon in 2003, 2004, 2005, 2006 and 2008.
This year's Wimbledon starts on Monday June 25th and the London Olympics will also be played on grass in late July at the All-England Lawn Tennis Club. Hopefully, this loss does not bode badly for Roger's chances in both tournaments. The last time Haas won Halle (in 2009), he reached the semifinals of Wimbledon, where he lost to (you guessed it!) Roger Federer.