Gregory Donovan Ostertag (born March 6, 1973 in Dallas, Texas) is a retired American basketball player in the NBA, who spent most of his career with the Utah Jazz. He measures 7'2" (2.18 m) and played center. Throughout his college and professional career he wore the unusual uniform number 00 (but did wear no. 39 for two seasons). He was nicknamed Osterslug during his years with the Jazz due to his slow, plodding style of play. Wikipedia
The definitive Wikipedia entry for Greg Ostertag. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Greg_Ostertag
Completed his Kansas career as the top shot-blocker (258) in school and Big Eight history Named Honorable Mention All-American by the AP after his senior season at Kansas www.nba.com/playerfile/greg_ostertag/index.html?nav=page