Arraez (knee) suffered a minor ankle sprain at the Twins' alternate training site Monday, Do-Hyoung Park of MLB.com reports.
Although Arraez experienced a minor setback in his recovery, his timeline is only expected to be delayed by a few days. He should be included in the Twins' 40-man postseason pool. Once he's healthy, he should resume his role as the starting second baseman, but Marwin Gonzalez should continue to fill in while Arraez is unavailable.