"The Thunder announced Saturday that it has signed rookies James Harden, Serge Ibaka and Byron Mullens to contracts.

Harden was the third overall pick in this year's draft, Mullens was selected 24th by Dallas and acquired in a draft-night trade and Ibaka was the team's 24th pick in the 2008 draft.

Ibaka spent last season playing with Ricoh Manresa of the Spanish ACB League. He averaged 7.1 points, 4.5 rebounds and one block in 15.5 minutes per game.

Per team policy, terms of the players' contracts were not disclosed. But under NBA rules as outlined in the collective bargaining agreement's rookie scale, Harden can sign for a maximum first-year salary of $4,004,160. Mullens and Ibaka can both be signed to a first-year contract of a maximum of $1,203,000."