OKLAHOMA CITY -- The Thunder have exercised their fourth-year contract option on guard Reggie Jackson.
Jackson is entering his third season with the Thunder. He has career averages of 4.5 points, 1.7 assists and 1.9 rebounds in 115 games.
Lamb played in 23 games last season in his first year in the NBA, averaging 3.1 points. Jones made one start in 38 games during his rookie season, averaging 2.3 points and 1.6 rebounds.