Isaac Haas, a 7-foot-2 center out of Gadsden, Ala., announced his commitment to Purdue on Monday.
The senior plans to sign with the Boilermakers before Wednesday.
"After a gruelling week of no sleep, and constant wars within myself. I've come to a decision!" Haas tweeted from his personal account, @isaacbball44. "#BoilerUp and I'm excited to play next year in the Big Ten and make my mark on history!!"
Haas is a former Wake Forest commit who Purdue coach Matt Painter pegged as a top target throughout the summer. When Haas chose the Demon Deacons on Sept. 1, the staff moved on and planned for either a spring signing or to go without a center in the 2014 class.
However, plans changed on signing day. Haas did not sign with Wake Forest and soon made plans for an official visit to nearby University of Alabama-Birmingham. Painter took a trip to Hokes Bluff, Haas' school, to meet with him before his decision.
Haas finished his trip to UAB this weekend and announced his plan to commit to a program via Twitter on Sunday. While most experts went with UAB because of the recent visit, Haas went with the Boilermakers.
Haas becomes the highest-rated commitment in the 2014 class. He is the No. 83 prospect in the country, according to the 247Composite, a service from 247Sports.com that compiles the rankings of Rivals.com, Scout.com, ESPN.com and 247Sports.com into one consensus ranking. He is a four-star recruit and a top-10 player at his position, as well.
Haas will join a signing class that includes three-star prospects Vincent Edwards, Dakota Mathias and Jacquil Taylor.