A four-week timeline would sideline Sefolosha for Oklahoma City's next 14 games. A six-week absence would cause him to miss 21 games and place his return date in the final week of the regular season.
The 29-year-old Swiss guard has averaged 6.7 points, 3.7 rebounds and 1.5 assists in 26.4 minutes per game over 55 starts for the Thunder this season. Sefolosha was forced from action during the first quarter of Oklahoma City's 113-107 home victory over Memphis on Friday, departing with two points (on 1-for-1 shooting), two rebounds and one assist.
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Perry Jones, a 2012 first-round pick, is expected to step into Sefolosha's starting spot, alongside Russell Westbrook, Kevin Durant, Serge Ibaka and Steven Adams. That move allows second-year guard Jeremy Lamb to remain in his sixth man role and gives coach Scott Brooks an extraordinarily long and athletic wing combination.
During Sefolosha's absence, Oklahoma City can also turn to veteran forward Caron Butler, who was recently signed after reaching a buyout with Milwaukee. The Thunder, who welcomed back Westbrook from a knee injury following the All-Star break, enter Sunday's action with a West-leading 44-15 record.