Marvin Bagley, widely considered the top recruit in the Class of 2018, reclassified this week and might be able to play for Duke in the upcoming season.
His decision immediately thrusts the Blue Devils toward the front of the national-title conversation for the 2017-2018 season.
But what exactly does it mean to reclassify and how does the process work?
According to the NCAA, all incoming athletes must complete 16 core courses from a list that includes English, math, natural or physical science, social science, foreign language, comparative religion or philosophy. Classes such as physical education, health and music do not count as core courses, nor do remedial classes or classes completed through credit-by-exam.
The athletes also must show proof of graduation from high school and have an ACT/SAT test score that corresponds to his core course grade-point average on a sliding scale; the higher the GPA, the lower the standardized test score needs to be.
The NCAA eligibility center's amateurism team then determines whether to certify the athlete. The process and requirements are the same for every sport.
Bagley is scheduled to graduate from Southern California's Sierra Canyon High School later this month, completing his coursework a year ahead of schedule. His transcripts may be a little more complicated because he attended three different high schools, and the NCAA will review his final transcript after his graduation to determine whether he is eligible to play Division I basketball.
Bagley's move is not unprecedented.
Through the years, five-star prospects who want to get a jump on their college careers -- and potentially professional careers -- have gone through the same process, though usually not right before the fall semester begins as Bagley did.
Mike Gminski is considered the leave-high-school-early originator, graduating a year early so he could play at Duke in 1976. He went on to become an All-American and played 17 NBA seasons.
In recent years, Kansas' Andrew Wiggins, North Carolina State's Dennis Smith, Duke's Derryck Thornton and Kentucky's Karl-Anthony Towns were among athletes who graduated early to play college basketball sooner. Kentucky's Hamidou Diallo graduated a semester early and joined the Wildcats in January last season but did not play. He declared for the NBA draft before deciding to return to Lexington.
Jontay Porter reclassified this year so he could play a year early with his brother, top recruit Michael, at Missouri. Canadian guard R.J. Barrett, considered the top recruit in 2019, has reclassified so he can graduate in 2018.
"With AAU and year-round competition basically, a lot of the players are ready for college-level play at an earlier age," Gminski said in an interview in 2015. "And most of these guys have been around a lot. They do a lot of traveling. They tend to mature pretty fast."
Early graduation in football became popular in the early 2000s, though they typically only do it a semester early to enroll in college for the spring semester and participate in spring practices.
Baseball player Bryce Harper left his Las Vegas high school after his sophomore season and earned his GED so he could start playing professional baseball sooner. He played one season for the College of Southern Nevada and was taken with the No. 1 overall pick in the 2010 MLB draft by the Washington Nationals.
An opposite trend has started playing out in recent years, with parents holding their kids back a year so they can become bigger, stronger and more polished -- some as early as middle school. Many top-tier recruits hold off going to college for a year, instead playing for elite prep schools after graduation for more seasoning and exposure.
Bagley opted for the get-to-college-early route, changing Duke's prospects in the process.
Sports on 08/19/2017