Morrison is perhaps best known for being the last American male left standing in the singles draw at Wimbledon in 2002, defeating future World No. 1 Juan Carlos Ferrero en route to the third round.
San Juan | Carlos Santana | Juan Carlos I of Spain | William Carlos Williams | San Carlos | Carlos Menem | Don Juan | Don Carlos | Santurce, San Juan, Puerto Rico | Juan Gabriel | Juan Perón | Wendy Carlos | Juan Pablo Montoya | Roberto Carlos | Carlos the Jackal | Carlos Sastre | Carlos Gardel | Carlos | Strait of Juan de Fuca | Juan Ramón Jiménez | Juan Luna | San Juan, Metro Manila | San Juan Islands | San Juan, Argentina | San Carlos Water | Carlos Saura | San Juan del Sur | Roman Catholic Diocese of San Carlos de Ancud | Juan Manuel Santos | Juan Gris |
Other top seeds competing were 2007 Vienna semifinalist Juan Carlos Ferrero, recent Adelaide runner-up Jarkko Nieminen, Nicolás Almagro, Philipp Kohlschreiber and Albert Montañés.
Among the many notable players he beat on the ATP Tour are former World No. 1s Andre Agassi, Jim Courier, Gustavo Kuerten, Juan Carlos Ferrero, Marcelo Ríos and Carlos Moyá, as well as Grand Slam champions Richard Krajicek, Goran Ivanišević, Albert Costa, Gastón Gaudio, Thomas Johansson and Michael Chang.