Malcolm Delaney played basketball at the McDonogh School in Maryland for a year and then for three seasons at Baltimore’s Towson Catholic High School. As a senior, he was named Player of the Year in Maryland and led his team to the championship of the Catholic schools of Baltimore.
In 2007 he began attending Virginia Tech University. In his second year he was named in the All-ACC 3rd team, after averaging 18.1 points and 4.5 assists per game. As a junior, he was named in the All-ACC 1st team and averaged 20.2 points per game, first overall in the ACC. In 2010/11, he averaged 18.7 points per game and was again included in the All-ACC 1st team.
In 2011/12, he began his professional career in Chalon, France, winning the league title (15.0 points per game) and the French Cup.
In 2012 he moved to Kiev in Ukraine and won again the league championship with Budivelnik. He was named in the All-Eurocup 1st team (after averaging 16.1 points per game). At the end of that season, he moved to Bayern Munich and made his EuroLeague debut (13.9 points per game, and more than 4 assists on average) as well as winning the German championship.
In 2014, he was signed by Lokomotiv Kuban where he stayed for two years. In 2015/16 he played the Final Four losing the semifinal against CSKA Moscow. That season he was named in the All-EuroLeague 1st team, after averaging 16.3 points per game and distributing more than five assists per outing. In the following two seasons, he played in the NBA for the Atlanta Hawks, then spent a year in China with the Guandong Southern Tigers (19.4 points per game on average) and finally a year at Barcelona (10.2 points, almost five assists per game in the EuroLeague).