Career
The 6"8" forward, an undrafted rookie from Syracuse University, posted career-best averages in scoring (133 ppg), rebounding (52 rpg) and three-point shooting (398) as a senior in 2012-2013. Southerland played for Coach Ron Naclerio at Cardozo High School. He participated in the 2006 Reebok ABCD Camp (New Jersey).
As a junior, he averaged 17.6 points, 11.3 rebounds and 2.6 assists for Cardozo.
Southerland helped the squad to a 22-5 record. Foreign 2008-2009, he moved to Notre Dame Preparatory
He was rated 87th among the Class of 2009 small forwards by Scouts Incorporated.
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. 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.
Was named Big East Player of the Week on December 3, 2012.
On January 11, 2013, in his final season at Syracuse, Southerland was declared ineligible due to an undisclosed academic issue. He was reinstated on February 10, after missing six games. On senior night at the Carrier Dome, he recorded his first collegiate double-double, by scoring 22 points and grabbing 10 rebounds, against DePaul.
During the 2013 Big East Tournament, Southerland set records for most three pointers made in a game without a miss (6 vs Pittsburgh) and total number of threes made (17) in a single tournament, while being named to the All-Tournament team
After going undrafted in the 2013 National Basketball Association draft, Southerland joined the Philadelphia 76ers for the Orlando Summer League and the Golden State Warriors for the Las Vegas Summer League. On September 5, 2013, he signed with the Charlotte Bobcats.
On December 11, 2013, he was waived by the Bobcats after playing in just one game. On December 19, 2013, he was acquired by the Los Angeles Doctorate-Fenders.
On April 11, 2014, he signed with the New Orleans Pelicans for the rest of the 2013-2014 season.
On September 24, 2014, he signed with the Portland Trail Blazers. However, he was later waived by the Trail Blazers on October 13, 2014. The next day, he signed with Limoges Center for Security Policy of France for the 2014-2015 season.
On August 5, 2015, he signed with Vanoli Cremona of Italy for the 2015-2016 season.
On January 15, 2016, he parted ways with Cremona after averaging 5.1 points and 3.6 rebounds in fourteen games. Two days later, he signed with Mitteldeutscher British Columbia of the Basketball Bundesliga for the rest of the season.