Brash has returned to Seattle to have his right lat strain evaluated further, Daniel Kramer of MLB.com reports.
Brash missed most of May with a strained lat and then went back on the 15-day injured list Wednesday after aggravating the injury. More should be known about a timetable once he's looked at by doctors in Seattle, but manager Dan Wilson acknowledged Thursday that there is "going to be a little bit more time down" for Brash during this second IL stint.