Education
He attended the Australian Institute of Sport in 2005 and played college basketball for Washington State University.
He attended the Australian Institute of Sport in 2005 and played college basketball for Washington State University.
On 1 June 2009, Baynes signed a two-year deal with Lietuvos Rytas of the Lithuanian Basketball League. In July 2009, he joined the Los Angeles Lakers for the 2009 National Basketball Association Summer League where he averaged 2.0 points and 2.8 rebounds in five games. Following the 2009-2010 season, he parted ways with Lietuvos Rytas.
On 15 July 2010, Baynes signed a two-year deal with EWE Baskets Oldenburg of the Basketball Bundesliga.
In 40 games, he averaged 6.8 points and 3.7 rebounds per game. On 29 June 2011, he parted ways with Oldenburg.
On 24 August 2011, Baynes signed a one-year deal with Ikaros Kallitheas of the Greek Basket League. On 1 August 2012, Baynes signed a one-year deal with Union Olimpija of the Slovenian Basketball League.
On 5 January 2013, he played his final game for Olimpija as he later left the team in pursuit of an National Basketball Association contract.
On 23 January 2013, Baynes signed with the San Antonio Spurs. In his second National Basketball Association game, Baynes recorded 7 points, 9 rebounds and 1 block in a 102–78 victory over the Charlotte Bobcats. During the 2012-2013 season, he was assigned multiple times to Austin Toros of the National Basketball Association Development League.
The Spurs went on to reach the 2013 National Basketball Association Finals, but lost the series in seven games to the Miami Heat.
On 1 December 2013, Baynes was reassigned to the Austin Toros. He was recalled on 2 December, reassigned on 8 December and recalled again on 9 December.
On 26 September 2014, Baynes re-signed with the Spurs. On 20 December 2014, he scored a then career-high 16 points as he started in place of Tim Duncan in the 93-99 loss to the Dallas Mavericks.
On 12 July 2015, Baynes signed with the Detroit Pistons.
In the summer of 2010, Baynes was named to the Australian senior men"s national team to play at the 2010 International Basketball Federation World Championship in Turkey. Baynes also played for the Boomers at the London 2012 Summer Olympic Games. Although he only averaged 12 minutes per game, Baynes finished as the team"s fifth-leading scorer, and had averages of 7.5 points, 3.3 rebounds, and an impressive.65 field goal percentage.
Baynes competed at the 2014 International Basketball Federation Basketball World Cup in Spain where he averaged 16.8 points and 7.0 rebounds in six games.