WASHINGTON — Washington Wizards center Ian Mahinmi is expected to miss four to six weeks after undergoing knee surgery.

The team said Saturday he had surgery a day earlier for a partially torn medial meniscus in his left knee.

Mahinmi was hurt in Thursday’s exhibition game against Philadelphia.

He signed a $64 million, four-year deal in the offseason. The 29-year-old player averaged 5.1 points and 4.3 rebounds in eight NBA seasons with San Antonio, Dallas and Indiana.