He was rated 87th among the Class of 2009 small forwards by Scouts Inc.[1] Over his four-year career, Southerland averaged 7.9 points and 3.3 rebounds while shooting .449 from the field and .370 from three-point range in 112 games.

[1] With nine, he tied the school record for made threes in a single game, at Arkansas, on November 30, 2012, while scoring a career-best 35 points.

[3] On January 11, 2013, in his final season at Syracuse, Southerland was declared ineligible due to an undisclosed academic issue.

[4] On senior night at the Carrier Dome, he recorded his first collegiate double-double, by scoring 22 points and grabbing 10 rebounds, against DePaul.

[10] He was acquired by the Los Angeles D-Fenders of the NBA D-League eight days later[11] and earned All-Rookie Second Team honors for the 2023–14 season.

[12] Southerland played for the Pelicans in the 2014 NBA Summer League and then spent the pre-season with the Portland Trail Blazers.

[8] After playing in the 2017 NBA Summer League for the Utah Jazz, Southerland returned to the Santa Cruz Warriors for the 2017–18 season.