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The deal comes at a reasonable price after Sefolosha, a defensive specialist, struggled in the playoffs and was benched by Thunder coach Scott Brooks. The Hawks needed defensive help on the wings, and the 6-5 Swiss guard has the wingspan and athleticism to cover small forwards, as well.
A former first-round draft pick, the 30-year-old has spent his last four and a half seasons with the Thunder, and averaged 6.3 points and 1.5 assists in 61 games as a starter last season.
In 2012-13, Sefolosha shot 41.9 percent from the perimeter in 81 games, but saw that percentage drop to just 31.6 in 2013-14.