By Nathan RuizOklahoma State locked up half of its 2019 basketball recruiting class in one signing day ceremony.Tulsa Memorial twins Kalib and Keylan Boone signed their letters of intent to OSU on Wednesday, the first day they were able to do so.Kalib Boone, a 6-foot-8, 180-pound center, is the top-ranked prospect in Oklahoma, per the 247Sports Compostie.Read more on NewsOK.com