Forston was a three-year starter at Miami Northwestern High School. Forston helped lead Miami Northwestern towarsd a back-to-back Florida 6A state championships. Forston had a strong junior year in 2006 earning 92 tackles and 20 sacks. He played an instrumental part in Miami Northwestern's Florida 6A State championship. Forston was included to the Miami Herald's All-Dade 6A-4A Football team. Forston's older brother, Dustin, played college football at Ole Miss and FAU. Forston entered into his senior year as a heavily sought after recruit. Forston accounted for 72 tackles, earned 20 sacks, and forced 7 fumbles during his senior season at Miami Northwestern, which often came while he was double or triple-teamed. Moreover, Forston sometimes lined up at tight end on goal-line situations. Forston earned county and state honors for his play and was named to the Miami Herald's All Dade First team and the State of Florida's All-State first team. Forston also earned national recognition being named to several All-American teams, including USA Today, Parade, and EA Sports. Forston was chosen to represent East Team in the U.S. Army All-American game as a starter and was considered one of the bestdefensive tackles coming out of high school in 2008, earning comparisons to Warren Sapp. In 2010, Rivals.com called Forston—in retrospect—“maybe the best nose tackle prospect in the past five years.” Forston was considered a five-star recruit by Rivals.com and was ranked the No. 1 defensive tackle in the nation. He chose Miami over Notre Dame, USC, Tennessee, and Alabama, calling Miami the "dream college right around the corner from my house."
College career
Forston played as a true freshman and was instrumental to the Miami Hurricanes' defensive rotation. During his freshman season, Forston recorded 17 tackles with 4.5 tackles for loss, and 3 quarterback sacks. Forston was given the nickname “Big Boom” by his teammates. Forston subsequently earned multiple All-Freshman honors and was named to FWAA′s Freshman All-America team, College Football News′ All-Freshman first team, and Rivals.com′s 2008 Freshman All-America team. His sophomore season was derailed by an ankle injury that kept Forston out for the season. Forston was thereby granted a medical redshirt for the 2009 season. Forston came back strong during the 2010 season registering 37 total tackles, 12 tackles for loss, 3 quarterback sacks, 1 interception and 2 passes defended. Forston's final season was cut short because of a season-ending knee injury against Bethune-Cookman. Forston subsequently decided to forgo his final season of eligibility and entered the NFL Draft.
Forston entered the NFL Combine graded as the No. 15 prospect among defensive tackles. His workout performance was rather unimpressive compared to other defensive line prospects. Projected as a seventh-round selection by Sports Illustrated, Forston was ranked as the No. 24 defensive tackle available in the 2012 NFL Draft. Forston was not drafted in the 2012 NFL Draft.
;2012 Season Forston was signed as a UDFA after the draft by the New England Patriots. Forston initially made the team, but was waived on September 26. He was then re-signed to the team's practice squad and was later activated by the New England Patriots. Forston played in one game during the season; a 31-30 week 3 loss to the Baltimore Ravens. ;2013 Season Forston was waived by the New England Patriots entering the 2013 season, but was later signed to their practice squad. Forston was re-signed by the New England Patriots after Vince Wilfork's season-ending injury. Forston registered one tackle for loss in 'New England's Week 6 30-27 win against the New Orleans Saints. Forston earned his first NFL start in New England's Week 7 30-27 loss to the New York Jets, registering two tackles, with one tackle for loss. On August 21, 2014, Forston was released by the Patriots.
