The 76ers announced Tuesday that McCain underwent successful surgery to repair a lateral meniscus tear and remains out indefinitely, Tim Bontemps of ESPN.com reports.
George contributed 33 points (13-20 FG, 6-9 3Pt, 1-2 FT), five rebounds, eight assists, one block and two steals in 40 minutes during Monday's 121-108 win over Charlotte.
Lillard (calf) is available and will play in Tuesday's NBA Cup Championship game against the Thunder, head coach Doc Rivers told Tim Bontemps of ESPN.com.