Playing for West Jessamine High School in January 2009, Polson set the KHSAA Kentucky state high school basketball record for free throws attempted and free throws made, in a game in which he also scored 51 points.

Polson played a total of 31 minutes where he had 4 rebounds, 1 assist, 2 steals, 4 personal fouls, 5 turnovers, and 1 point.

Coach Calipari subbed Polson in for Ryan Harrow, whose play was greatly hindered due to flu-like symptoms.

The one steal was off of a missed free throw by Nerlens Noel, which was rebounded by Terrapins guard Pe'Shon Howard.

Maryland head coach Mark Turgeon later called Polson's steal and acrobatic layup the "play of the game."

In the final seconds of the game, Polson extended Kentucky's lead from 1 to 3 points by sinking two free throws.

Kentucky finished the season 29–11, and Polson got his only start on Senior Day, a 55–48 win over Alabama on March 4.