In 2005–06, Richards played for the Medway Park Crusaders, making regular appearances with the senior team aged only 14, in the English Basketball League's third division.

He averaged four points and four rebounds per game and helped the Crusaders finish runner-up in the 2006 National Shield.

[1] In 2006–07, Richards played for Gran Canaria's U16 cadet team at the Spanish Academy level.

In April 2007, he played for the World Select team at the Nike Hoop Summit at just 15 years old, going 0-2 from the field in three minutes.

He later represented England at the 2007 U16 European Championship (Division B), where he averaged 18.6 points and 11.6 rebounds over seven appearances in helping his squad to a fourth-place finish.

During the 2008–09 season, he also played two games in the Nike Junior International Tournament for German club Brose Baskets, averaging 16.5 points, 11.5 rebounds and 1.0 blocks in 29.3 minutes.

Following this three-game stint, he began suiting up for the senior squad, but never made it onto the court with Gran Canaria.

[1] On 24 June 2010, Richards was selected by the San Antonio Spurs with the 49th overall pick in the 2010 NBA draft.

[5] In July 2012, Richards joined the San Antonio Spurs for the 2012 NBA Summer League.

In July 2013, Richards re-joined the San Antonio Spurs for the 2013 NBA Summer League.

[22] On 26 April 2018, Richards was reported to have parted way with the team without playing a game due to shoulder injury.

[26] In April 2021, Richards signed with Angolan club Petro de Luanda to play in the 2021 BAL season.

[28] In April 2023, it was announced Richards had joined Guinean club SLAC for the 2023 BAL season.

[34] In summer 2016, Richards joined Overseas Elite to participate in ESPN's The Basketball Tournament.