Track and field American 100-meter world recordholder Maurice Greene will return to the track where he set the mark three years ago, organizers of Monday’s Athens Grand Prix, dubbed «Tsiklitiria,» announced yesterday. Greene, who set his 9.79-second world record at the same meet in 1999, is expected to run against his longtime rival Ato Boldon of Trinidad and Tobago. At the 2000 Olympics, Greene won the 100-meter gold and Boldon took the silver. The 200-meter champion from Sydney, Greece’s Kostas Kenderis, is also scheduled to take part. Other top names expected include sprinters Katerina Thanou of Greece, American Coby Miller, Zanna Pintusevich of Ukraine, and discus thrower Natalya Sadaova of Russia. Olympic environmentalism Leading officials and staff of the Athens 2004 Olympics’ organizing committee will participate in a cleanup operation this Sunday morning around the slopes of Mt Parnitha, north of Athens, the location of the upcoming Olympiad’s cross-country cycling event, to mark Wednesday’s World Environment Day. Volleyball Seeking meaner and leaner competition to raise Greek volleyball’s overall standards and prospects, the sport’s national federation yesterday imposed an age restriction on players in the national second and third divisions. The measure, which bans players over the age of 39 from competition, aims to open the doors to younger players in the lower-rate divisions.