Los Angeles Lakers rookie Lonzo Ball is expected to miss at least two additional games because of a left knee injury, according to head coach Luke Walton. The Lakers have officially ruled out Ball for a minimum of 10 games, Walton said Thursday. The team initially expected the 20-year-old to be out just three weeks. Walton said he hoped Ball would play during the road trip, which began Jan. 26 against Chicago. Ball has traveled with the team and received treatment for his injury. Walton has stated that Ball will not return until he could participate in team practice. Ball injured his left leg during a 107-101 victory against the Dallas Mavericks on Jan. 13. He has missed eight straight games so far.