Seton Hall point guard Aaron Cosby will miss four to six weeks after suffering a knee injury in practice.
Cosby, a sophomore, sprained the PCL in his right knee but won't need surgery, the Newark Star-Ledger reported.
Cosby averaged 7.9 points and 1.4 assists last season.
Until Cosby returns, the Pirates are left with inexperienced Freddie Wilson or Tom Maayan as their options at point guard.
Seton Hall opens the season Nov. 9 against Missouri-Kansas City.