In the NBA, Gill has played for the New Jersey Nets, Memphis Grizzlies, Portland Trail Blazers, Indiana Pacers, Seattle SuperSonics, and Milwaukee Bucks all usually in reserve roles.

Professionally, Gill has been an All-Star selection in the CBA (2004) and NBA Development League (2008) and won championships with the D-League (2009 with the Colorado 14ers) and Belgian Cup (2010 with BC Oostende).

[1] For the 1999 Big Sky Conference men's basketball tournament, Gill was MVP after scoring 15 points and making 9 assists and 6 rebounds in 40 minutes of play.

[3] Gill scored 16 points despite only making 4 of 12 field goals; he also made 5 of 5 free throws and had 2 assists and 5 defensive rebounds.

[1] Not selected in the 2000 NBA draft, Gill began his professional career with the Las Vegas Silver Bandits of the IBL.

[7] Playing in a game against the Boston Celtics on April 15, 2001, Gill scored the eight millionth point in NBA history.

[9] Returning to the Kansas City Knights in fall 2001, Gill played in 18 games and averaged 12.1 points, 4.9 rebounds, and 6.7 assists.

[7] In a game that used only eight players, Gill scored 20 points in his debut with Memphis on February 25, a 90–77 loss to the Los Angeles Clippers.

[11] Gill signed with NBA Development League team Asheville Altitude on November 23, 2002, and was waived on February 24, 2003.

[1] Gill later signed with Reggio Emilia of the Italian league Legadue Basket and averaged 14.1 points and 2.9 rebounds in 13 games.

[1] In the CBA All-Star Classic on January 20, Gill helped the National team rally from a 20-point deficit to a 2-point win with 15 points, 6 assists, 10 rebounds, and 3 steals.

[13] Gill returned to the NBA on February 5, 2004, by signing as a free agent with the Portland Trail Blazers.

[7] In the infamous game on November 19, 2004, that concluded with the Pacers–Pistons brawl, Gill joined two of his Pacers teammates and others in an effort to break up a fight between players and fans.

[15][16] In Indiana's 86–83 loss to Orlando on November 20, Gill made 3 of 10 field goals (including 1 of 1 three-point attempt), converted 1 of 2 free throws, and had 8 points, 1 rebound, 3 assists, 3 steals, and a turnover.

[15] Gill made his postseason debut on April 23, 2005, in the Pacers' first first-round playoff game against the Boston Celtics.

[22] In the 2008 NBA D-League All-Star Game on February 16, Gill played on the Red Team and scored 3 points off one three-pointer but missed 6 other field goals.

[27] The Milwaukee Bucks, facing a depleted roster due to injuries, signed Gill to a 10-day contract on February 9, 2009.

[31] In November 2009, Gill signed with the Basketball League Belgium team BC Oostende and in 26 games averaged 7 points, 3. rebounds, 4.3 assists, and 2.2 steals with 28.0% field goal shooting.

[9] On February 19, 2010, during a late 12–4 run by Oostende, Gill made five free throws in the last two minutes to seal a 75–68 win over the Antwerp Giants.

[33] Gill played in 27 league games and averaged 7.1 points, 2.2 rebounds, 3.4 assists, and 1.4 steals with 40.9% field goals made.

He had 4 points, 3 assists, and 7 turnovers but drew a last-second charging foul to seal Townsville's three-point victory over the Melbourne Tigers.

On Friday 30 March 2012, the Crocodiles scored an upset 99–82 win over the New Zealand Breakers in the first game of the 2011–12 NBL postseason competition.