Mariners place Justus Sheffield (left forearm strain) on 10-day IL

The Seattle Mariners placed left-handed starting pitcher Justus Sheffield on the 10-day injured list with a left forearm strain and recalled right-hander Erik Swanson (right groin strain) from his rehab assignment. Swanson, 27, and Sheffield, 25, were both acquired by Seattle when the Mariners traded away James Paxton to the...