Olson was optioned to Triple-A Nashville on Tuesday.
Olson's second stint with the major-league club was uneventful, as he played in just one game and logged only a pair of plate appearances. The 23-year-old has put together an excellent .285/.374/.575 slash line in 47 games with Nashville this season, and if Matt Joyce continues to struggle, Olson could be up for good before too long.