A new retractable roof was built in time for the 2009 championships, marking the first time that rain did not stop play for a lengthy time on Centre Court. The Club tested the new roof at an event called "A Centre Court Celebration" on Sunday, 17 May 2009, which featured exhibition matches involving Andre Agassi, Steffi Graf, Kim Clijsters and Tim Henman. The first Championship match to take place under the roof was the completion of the fourth round women's singles match between Dinara Safina and Amélie Mauresmo. The first match to be played in its entirety under the new roof took place between Andy Murray and Stanislas Wawrinka on 29 June 2009. Murray was also involved in the match completed latest in the day at Wimbledon, which ended at 11:02pm in a victory over Marcos Baghdatis at Centre Court in the third round of the 2012 Championships. The 2012 Men's Singles Final on 8 July 2012, between Roger Federer and Murray, was the first singles final to be partially played under the roof, which was activated during the third set.