Mercer forward Bud Thomas (5) and Duke guard Rasheed Sulaimon, right, struggle for the ball during the NCAA college basketball tournament, Friday, March 21, 2014, in Raleigh, N.C. Mercer won 78-71. (AP Photo/Chuck Burton)

March Madness: Duke upset by Mercer

Daniel Coursey scored 17 points and Mercer pulled off the biggest upset in the NCAA tournament so far by knocking off Duke 78-71 Friday.