However, after a disappointing showing at Georgia Tech in which the Tar Heels lost by twenty points, Roy Williams took the gamble and inserted Marshall into the starting lineup at a win versus Clemson.

[2] Soon Drew transferred to UCLA, allowing Marshall to take on the leadership role with poise; as he dished out an ACC-record 16 assists while committing only three turnovers at a win over Florida State on February 6, 2011.

[5][6] Marshall fractured his wrist during North Carolina's NCAA tournament win against Creighton, landing hard after being fouled while driving for a layup.

[4] On March 29, 2012, Marshall announced that he would enter the 2012 NBA draft out of UNC with three of his teammates: sophomore Harrison Barnes, junior John Henson and senior Tyler Zeller.

[11] In his final Summer League game, Marshall had a double-double with 15 points and 10 assists in a 96–87 victory over the Memphis Grizzlies.

He had two assists and one steal in a blowout loss to the defending NBA Finals champion Miami Heat a day later.

[13] In his first game in the D-League, Marshall recorded 21 points, 8 assists and 2 rebounds in a 102–95 victory over the Santa Cruz Warriors.

[15] On October 25, 2013, Marshall was traded, along with Marcin Gortat, Shannon Brown and Malcolm Lee, to the Washington Wizards in exchange for Emeka Okafor and a 2014 first-round draft pick.

[18] In his debut with Delaware, Marshall recorded 31 points, 10 assists, 9 rebounds and 2 steals in a 126–139 loss to the Rio Grande Valley Vipers.

[24] On February 19, 2015, Marshall was traded back to the Phoenix Suns in a three-team deal that also involved the Philadelphia 76ers.

[30] On August 26, 2016, Marshall was traded to the Utah Jazz in exchange for Tibor Pleiss, two 2017 second-round draft picks and cash considerations.

[36] In August 2017, Marshall joined the United States national team for the 2017 FIBA AmeriCup,[37] where he won a gold medal.

[4] On October 2, 2019, Tar Heels head coach Roy Williams named Marshall the director of recruiting, a newly created position on his staff.