A native of Temple, Texas, Seastrunk attended Temple High School, where he finished his high school career with 4,127 yards and 52 touchdowns. He was a 2009 USA Today All-USA selection. Regarded as a five-star prospect by Rivals.com, he was listed as the No. 3 running back in the class of 2010. He played in the 2010 U.S. Army All-American Bowl. He chose Oregon over Auburn among others. The process of his recruitment was part of a 27-month NCAA investigation into alleged recruiting rules violations by Oregon in using a middleman, Willie Lyles, to secure both Seastrunk and LaMichael James for the Ducks; the results were three years' probation and taking away of three scholarships. Seastrunk was also a standout track athlete, he has personal bests of 10.50 seconds in the 100 meters and 6.60 meters in long jump during his preparatory track career. He clocked at 10.64 in the 100 meters as a sophomore and won the district meet that same year with a time of 10.77 seconds. He broke three Temple High School records as a 13-year-old eighth-grader.
College career
Seastrunk attended the University of Oregon for his freshman year. On August 20, 2011 it was reported that Seastrunk was granted a release from Oregon with plans to transfer to Baylor University. Before the end of the 2012 season, Seastrunk predicted he would win the Heisman Trophy next year and said "I know I am the best back in the country." Seastrunk finished the season with 1,012 yards on 131 carries but averaged 138.2 yards per game and scored five touchdowns during Baylor's 4-1 run to end the season. He did not win the Heisman Trophy. Seastrunk announced on January 6, 2014 that he would forgo his senior season and enter the 2014 NFL Draft. Career statistics
Professional career
Washington Redskins
Seastrunk was selected by the Washington Redskins with the 186th overall pick in the 2014 NFL Draft. He signed a four-year, $2.33 million contract with the Redskins on May 16, 2014. The Redskins waived him on August 30, 2014 for final roster cuts before the start of the 2014 season, losing the third-string running back position to fellow rookie Silas Redd. He was not signed to the practice squad.
Seastrunk was signed to the practice squad of the Tennessee Titans on October 1, 2014. He signed a futures contract with the Titans on December 29, 2014. He was waived from the team on May 18, 2015.
