The Tigers boasted the fifth-ranked recruiting class in the nation, per Scout, despite signing fewer prospects than any other school in the top eight (outside of Kentucky, which also inked three).
Simmons is the headliner, coming off three consecutive national championships while at Montverde Academy (Fla.). The 6-foot-10 forward and native Australian was considered by many outlets the top recruit in 2015 while Scout ranked Simmons No. 2 overall in its final class rankings.
Blakeney, Simmons' Each 1 Teach 1 teammate last summer on the Nike EYBL circuit, also enters Baton Rouge as a five-star prospect. Like Simmons, Blakeney was a McDonald's All-American and as a shooting guard is rated among the highest LSU backcourt signees in the last two decades.
Sampson is the hometown favorite, a two-time state champion with Madison Preparatory Academy, located in north Baton Rouge. The four-star recruit projects as a shooting guard on the college level.
All three will have an opportunity to travel with the team to Australia in August as part of the program's first international trip in four years, when former coach Trent Johnson took LSU to Italy.
Their arrival over the weekend is positive news, considering LSU has dealt with late entries in the past, such as Jordan Mickey in the summer of 2013. This time around it appears there will be no difficulties in terms of academics, transcripts or anything of that nature.