OKLAHOMA CITY — The Oklahoma City Thunder have exercised fourth-year contract options on Kevin Durant and Jeff Green.

Thunder general manager Sam Presti said on Friday that the team also exercised third-year options on guard Russell Westbrook and forward D.J. White.
The franchise drafted Durant and Green in 2007 and Westbrook and White in 2008. NBA rookies get two-year contracts with teams having the option to pick up a third and fourth season.
With the team exercising its option on the players, all four are now under contract with the Thunder through the 2010-11 season.