As a freshman, he set a school record for consecutive free throws made, which he would break the next year. He led his team with 30 points in their victory over North Carolina State in the ACC Tournament championship game. He put up 26 points against Central Michigan in the second round of the NCAA Tournament[4] However, he struggled in Duke's Sweet Sixteen loss to the Kansas Jayhawks hitting only two of 16 shots.[5]
Redick served as co-captain in his junior year, along with senior point guard Daniel Ewing.[3] He also served as captain his senior year, along with fellow seniors Shelden Williams, Sean Dockery and Lee Melchionni.[6]
In the 2004-2005 season, Redick led Duke in scoring with 21.8 points per game. He won the ACC Player of the Year award, and the Adolph F. Rupp Trophy for national player of the year.[3] Redick's victory in the Rupp voting spoiled the consensus for Utah's Andrew Bogut, who won every other major player of the year award. In 2006, after facing close competition all year from Gonzaga player Adam Morrison, Redick swept the major player of the year awards, taking home the Rupp, Wooden, and Naismith trophies.
Redick set the record for the most consecutive free throws made in the ACC with 54.[4] This record began on March 20, 2003 and ended on January 15, 2004. Redick entered his final post-season with a chance to go down as the NCAA's all-time leading free-throw shooter. The record, 91.3%, is held by Gary Buchanan of Villanova. In an otherwise triumphant visit to Greensboro Coliseum for the 2006 ACC Tournament and early NCAA Tournament games, J.J. struggled at the line, lowering his career free-throw percentage by about 0.5% and finishing his career with 91.16% (660 out of 724).
On February 14, 2006, in the first half of a game against Wake Forest, Redick broke Virginia alumnus Curtis Staples' NCAA record of 413 career three-pointers made.[7] Keydren Clark of Saint Peter's College subsequently surpassed Redick's mark in the MAAC Tournament. However, Redick returned the favor by hitting 15 three-pointers in the ACC Tournament and 12 in the NCAA Tournament to finish ahead of Clark. Redick finished his career with an NCAA-record 457 three-point field goals shooting 40.4% from three-point range.[3]
In the game after breaking Staples' record, Redick scored 30 points on February 19, 2006, against Miami to become the all-time leading scorer at Duke, with 2,557 points scored in his career.[8] On February 25, 2006, in a game at Temple University, Redick passed Dickie Hemric's 51-year-old ACC scoring record of 2,587 points with a pair of free throws in the waning minutes of the game. Redick finished his career with 2,769 points.[9]
On March 10, 2006, in an ACC Tournament quarterfinal against Miami, Redick scored 25 points, setting a Duke record for points in a season with 858. Redick ended the season with 964 points.[10] Redick came up just short of the ACC record for points scored in a season, which was set by Dennis Scott with 970 points in 1990. Redick also finished his career as the leading scorer in ACC tournament history.[3] His total of 225 points eclipsed Wake Forest's Len Chappell, who scored 220 points in the tournament from 1960-62.
As the marquee player of the Duke Blue Devils, Redick was the target of abuse by opposing fans. Travis Clay, of CBS Sportsline, called him the "most hated current athlete in America."[11] After students from rivals Maryland and North Carolina discovered his cell phone number, Redick estimated that he received 50 to 75 hate calls per day from opposing fans. He was often the target of obscenity-laced tirades from fans.
On February 4, 2007, Redick's #4 jersey was retired at Cameron Indoor Stadium at a special halftime ceremony. Redick became the thirteenth Duke player to have his jersey retired.