Next year’s Kansas basketball roster just got significantly bigger. The Jayhawks on Sunday evening secured their second recruit from the Class of 2018, receiving an oral commitment from four-star center David McCormack of Oak Hill Academy in Mouth of Wilson, Va. At 6-foot-10, 260 pounds, McCormack is the No. 33-ranked player in the upcoming class according to recruiting outlet McCormack joins five-star prospect Silvio De Sousa, a 6-9, 220-pound power forward from IMG Academy in Bradenton, Fla., as incoming Jayhawk recruits ahead of the 2018-19 season. De Sousa is Rivals’ No. 25-ranked prospect. McCormack, who made an unofficial visit to Lawrence on Aug. 22, chose KU over Georgetown, Duke and Oklahoma State, among others. In announcing his decision in a newscast on WAVY-TV in Norfolk, Va., McCormack unbuttoned a dress shirt to reveal a grey undershirt with the Jayhawk logo and “Kansas” written across the front. McCormack cited coach Bill Self’s history of player development, assistant coach Jerrance Howard’s personal touch in recruiting and the program’s tradition of winning as reasons for his decision. “Looking forward to winning more championships,” McCormack said, “and making more memories at Kansas.” McCormack averaged 10.6 points and 8.6 rebounds as a junior at Oak Hill and, more recently, 14.8 points and 9.8 rebounds as a member of Team Loaded AAU on the Adidas circuit over the summer.