As a senior in 2005–06, he averaged 23.3 points, 5.2 rebounds, 7.1 assists and 3.1 steals per game, as he led Calvary Christian to a 22–3 record and was named the most valuable player of the San Antonio League and a first team all-conference selection.

[2] On May 2, 2006, Gibson signed a National Letter of Intent to play college basketball for New Mexico State University.

In the triple overtime thriller against Boise State on March 15 in the WAC title game, Gibson played a career-high 51 minutes and contributed 15 points.

[2] As a senior in 2009–10, Gibson averaged 17.5 points, 2.9 rebounds, 2.8 assists and 1.4 steals in 34 games while shooting 44.7% (197–441 FGs) from the field, 40.6% (106–261 3FGs) from three-point range and 84.8% (95–112 FTs) from the free throw line.

He was named All-WAC Second Team and led the WAC in three-pointers made, ranked second in 3FG%, fifth in scoring average, fourth in FT%, eighth in FG% and seventh in steals per game.

[4] Gibson finished with 1,541 career points at NMSU, which is seventh in program history, and was part of two Western Athletic Conference Tournament championship teams in 2007 and 2010.

[5] On July 21, 2010, Gibson signed a one-year deal with Oyak Renault of the Turkish Basketball Super League.

[7] On January 12, 2011, he signed with Ironi Ashkelon of the Israeli Basketball Premier League for the rest of the season.

On September 28, 2011, Gibson signed a one-year deal with Trabzonspor of the Turkish Basketball Super League.

Winning the Legadue playoffs led to Brindisi being promoted to the Lega Basket Serie A for the 2012–13 season.

In August 2013, Gibson signed a one-year deal with the Zhejiang Lions of the Chinese Basketball Association.

[23] Following the conclusion of the 2013–14 CBA season, Gibson was offered a guaranteed deal by Russian club Nizhny Novgorod,[24] but he turned it down.

In July 2014, Gibson joined the Portland Trail Blazers for the 2014 NBA Summer League,[28] but he managed just one game and played a total of six minutes.

[29] Following his time with the Trail Blazers, Gibson signed a two-year deal with the Zhejiang Lions, returning to the club for a second stint.

[33] On March 17, 2015, Gibson signed with Petrochimi Imam for the 2015 WABA Champions Cup,[34] but the competition never went ahead.

[39] His impressive Summer League display led to a contract offer from Mavericks, and on July 15, Gibson signed a partially guaranteed three-year deal with the team.

On September 20, 2017, Gibson signed with the Qingdao DoubleStar Eagles of the Chinese Basketball Association, returning to the team for a second stint.

[53] In the Celtics' regular season finale on April 11, Gibson scored 18 points in a 110–97 win over the Brooklyn Nets.

[54] On September 11, 2018, Gibson signed with the Qingdao DoubleStar Eagles of the Chinese Basketball Association, returning to the team for a third stint.

[57][58] Gibson made his debut for the Dragons on November 21, 2019, with 31 points notched in a 130–114 win over the Qingdao Eagles.