Europe Rentzias played his first club basketball with the amateur youth teams of Danaos Trikalon, a local team from
Trikala,
Greece. After that, he began his professional
club career at the age of 17, with
PAOK Thessaloniki of the
Greek League, in the 1993–94 season. With PAOK, he won the championship of the now defunct European-wide third-level competition, the
FIBA Korać Cup, in the
1993–94 season, and the
Greek Cup title, in the 1994–95 season. He later transferred to the
Spanish ACB League club
Barcelona Bàsquet, for the 1997–98 season. With Barcelona, Rentzias won his second FIBA Korać Cup championship, in the
1998–99 season. With Barcelona, he also won 2 Spanish League championships, in the 1998–99 and 2000–01 seasons. In his last year with Barcelona (2001–02), Rentzias averaged 9.2 points and 3.5 rebounds, in 17.3 minutes per game, in 51 games played, in both the Spanish League (ACB) and in Europe's premier club basketball competition, the
EuroLeague. He shot 61.6 percent from the field, 36.3 percent from three-point range, and 71.4 percent from the foul line.
NBA Rentzias was selected with the 23rd overall pick by the
Denver Nuggets, in the
1996 NBA draft, while still under contract with
PAOK. Rentzias opted not to play in the
NBA at that time. On 29 September 1997, Rentzias' player draft rights were traded by the Denver Nuggets, along with a future
2000 2nd-round draft pick (
Hanno Möttölä was later selected), to the
Atlanta Hawks, in exchange for
Priest Lauderdale. On 26 June 2002, Rentzias was traded by the
Atlanta Hawks, to the
Philadelphia 76ers, in exchange for a future
2004 2nd-round draft pick (
Royal Ivey was later selected), and a future
2006 2nd-round draft pick (
Daniel Gibson was later selected). Rentzias then played in the NBA, with the
76ers, during the
2002–03 season. He played in 35 regular season games, and averaged 1.5 points per game. At that time, he was just the second Greek-born basketball player to have played for an NBA team. On 8 August 2003, Renztias was waived by the 76ers.
Return to Europe After leaving the
NBA, Rentzias subsequently played with
Ülkerspor, of the
Turkish Super League,
Montepaschi Siena, of the
Italian A League, and
Forum Valladolid, of the
Spanish ACB League. Rentzias had plans to come back to
PAOK, where he wanted to finish his playing career. Unfortunately, in August 2006, he announced his retirement from playing pro club basketball at the age of 30, because of injury problems. ==National team career==