i tried this before with 3 big mens..i set my lineup this way.....i had my center in starting C, and reserve PF.My pf in starting PF and reserve C...while my player x was backup for both C/PF...the results was okay...i remembered my center and pf playing for about40 mins each and player x played about 8 mins for pf and 8 for c...this happened to me....hope it helps...