Career
He played both the point guard and shooting guard positions. He is 1.86 m (6 ft 1 ¼ in) in height and he weighs 86 kg (190 pounds). Since 2015 he is a coach at Bayern Munich youth program
Greene played with the number 24 for Bayern Munich from 2010 to 2014.
Before transferring to Munich he played one season for the Greek club GS Olympia Larissa British Columbia of the First Rate (at Lloyd's) Ethniki. Before that he played two years for Brose Baskets from Bamberg and one year for Alba Berlin.
During his time at Bayer Giants Leverkusen (2002–2005), he became one of the best German shooters. From 1997 to 2002 Greene played with DJK Würzburg, where he was a teammate of 13-time National Basketball Association All-Star Dirk Nowitzki.
He played at EuroBasket in 2005, 2007 and 2009, at International Basketball Federation Basketball World Cup in 2006 and 2010 and at the Summer Olympic Games in 2008.
In all competitions he averaged 7.3 points, 1.8 rebounds and 0.7 assists per game.