Smart attended Oklahoma State for only two years before he chose to go pro. His freshmen year he led the Cowboys to a 24-8 record averaging 15.4 points, 5.8 rebounds, and 4.2 assists per game. He also led the Big 12 in steals in which he recorded 99 and averaged 3.0 per game. After a great season, he was then asked to join the 2013 NBA draft. He chose to return for a second season at Oklahoma and continued to play with the Cowboys for another year. He claimed he was not ready to turn pro then. So he stayed for his sophomore year and ended up breaking records. Although his sophomore season ended when OSU lost first round in the 2014 NCAA tournament, Smart became the first player in the NCAA tournament history to record 20 points, 5 assists, and 6 steals. On April 7,2014 Marcus Smart declared for the NBA draft.
The Boston Celtics chose point guard Marcus Smart as sixth overall pick in the 2014 National Basketball Association draft. At 6-foot-4 and 227 pounds, he is expected to make a difference for Boston. Smart will bring many talents to the Celtics and help out the spark that this team needs. His athleticism, size, and quickness, with make an impact instantly. For the season to come, Marcus Smart will be one athlete to keep an eye out as he competes in the pros for his rookie season.