The 6-foot-7, 280-pounder from Chagrin Falls (Ohio) Kenston chose Northwestern over at least 16 other offers, including Arizona State, Boston College, Cincinnati, Kansas, Louisville, Minnesota, Pittsburgh, Virginia and West Virginia.
He confirmed the commitment to WildcatReport via text message just minutes ago.
Northwestern's Class of 2013 now numbers six, and four of them are offensive linemen. Coverdale joins tackle Blake King and interior offensive linemen Brad North and Tyler Lancaster.
North and Lancaster committed on Thursday and Friday, respectively. Wide receiver Macan Wilson also committed on Thursday, meaning that the Wildcats have added four recruits to its rapidly expanding class in the last 96 hours.
Log on to WildcatReport for more on Coverdale's commitment.