SAN ANTONIO — The Spurs exercised their third-year option on center Ian Mahinmi's rookie contract Wednesday.

Mahinmi, who turns 22 next week and is entering his second season in San Antonio, is now signed through 2009-10. Financial terms weren't disclosed.

Mahinmi began last season with the Spurs but spent most of it with their developmental league team in Austin. He finished among the league leaders in scoring (16.8 points per game), rebounding (8.0), blocks (1.7) and field-goal percentage (62).

The native of France was drafted in the first round by the Spurs in 2005 and signed with San Antonio two years later after spending four seasons in the French A League.