Story (shoulder) will begin his rehab assignment with Triple-A Worcester on Sunday, Ian Browne of MLB.com reports.
Story will begin his assignment as the designated hitter, and barring any setbacks, he will move to playing in the infield. The 31-year-old dislocated his left shoulder just eight games into the regular season, and the procedure to repair the injury was thought to be season-ending. However, Story has been ramping up his activity since after the All-Star break, and he will take the next step in his rehab program Sunday. He will need several at-bats and fielding reps before being reinstated off the 60-day injured list, but a return to the majors before the end of the season is not off the table.