Guangzhou hosted the 2010 Asian Games.
They co-hosted the 2007 Asian Cup.
the Tour to France
most likely soccer
Daegu has hosted the 2011 IAAF Track and Field World Champions.
Guangzhou hosed the 2010 Asian Games.
Tokyo hosted the 1964 Summer Olympics as well as several matches from the 2002 FIFA World Cup.
Edmonton has hosted all sorts of sporting events:Rodeo (especially the CFR or Canadian Finals Rodeo)Hockey (host of the Edmonton Oilers and Edmonton Oil Kings)Football (host of the Edmonton Eskimos)CurlingAnd various other, more minor events
Seoul hosted the Games of the XXIV Olympiad in 1988.