These days it seems that almost every NBA player has a different offseason workout regimen and it appears that San Antonio Spurs forward Tim Duncan have taken boxing.
Check out the below tweets that were sent out by two-time world boxing champion Jesse James Leija:
— Jesse James Leija (@JesseJamesLeija) August 21, 2013
— Jesse James Leija (@JesseJamesLeija) August 27, 2013
Tim Duncan image courtesy of Getty Images