Mariners' Kyle Lewis: Undergoes knee surgery

Lewis had surgery on his right meniscus Wednesday and is without a timetable to return, Brad Adam of ROOT Sports Northwest reports.

While any knee surgery is a significant procedure, Lewis could still return sometime in the second half of the season in this case. He recently received a second opinion that apparently led to the decision to get the surgery. In the meantime, Jake Fraley, Taylor Trammell and Mitch Haniger should all be near-everyday players in Seattle's outfield.