Willow 'Rockwell' Koerber (USA, 12 December 1977 in Summertown), in her career seems to have subscribed to number 3 given her countless third places in important competitions. Her most notable achievements are double 3rd place at the mountain bike world championships (2009 and 2010). 2010 was her best year with 2nd place in the World Cup and victory at the Pan American Championship. She retired from competition in 2012.