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According an initial report from Yahoo! Sports, which was confirmed by several other news organizations, Yao Ming definitely set to retire after just nine NBA seasons.

An source who spoke under the condition of anonymity says neither Yao nor his representatives have informed the league office of the decision, and the league says Yao has not filed paperwork that would make his decision final.

The 7-foot-6 Yao was the top overall pick in the 2002 draft, but his career has been hampered by recent foot and leg injuries.