Early career Newble played for three seasons in the
International Basketball Association (IBA) and later the
Continental Basketball Association (CBA) before playing in 2000 overseas. He also played stints in the CBA in 2001 and the
United States Basketball League (USBL) in 2002.
NBA career Newble signed as a free agent with the NBA's
San Antonio Spurs and his NBA debut with in the 2000–2001 season, playing in 27 games, of which he started six. In just under seven minutes per game, he averaged 2.0 points per game (ppg) and 1.3 rebounds per game (rpg). He was waived by the Spurs after the season. He then signed with the
Atlanta Hawks for the 2001–2002 season, and his playing time and production greatly increased. Playing 42 games (starting 35), he played over 30 minutes per game, averaging 8.0 ppg and 5.3 rpg, which would both be career highs for Newble. On April 13, 2002, against the
Cleveland Cavaliers, Newble set a then career single-game high with 17 points and a career-high 12 rebounds. The following season, 2002–03, he played in 73 games (starting 45), averaging 7.7 ppg, 3.7 rpg, and a career-high 1.4 assists per game. The Cleveland Cavaliers signed Newble as a free agent in July 2003. In the 2003–04 season, in 64 games (25 as a starter) playing about 19 minutes per game, he averaged 4.0 ppg and 2.4 rpg. In 2004–05, he played a career-high 74 games (starting a career-high 69), averaging 5.9 ppg and 3.0 rpg. He was waived by the Sonics one week later after playing just two games. In the
2006–07 NBA season he was a part of the team that won the Eastern Conference Championship. In March, 2008, Newble signed a 10-day contract with the Los Angeles Lakers. Nine days later, the Lakers signed Newble for the remainder of the season. He played six games for the Lakers, ending his eight-year NBA career with 1,930 points, 1,114 rebounds, 342 assists, 204 steals and 105 blocks in 380 games. In March 2009, he signed with
Bnei HaSharon from the Israeli
BSL for the remainder of the season. He joined the
Greek League club
Aris Thessaloniki in August 2009. He signed for
Cáceres 2016 Basket in December 2009. Cáceres released him a month later. ==Coaching career==