Mariners' Taylor Guilbeau: Out with shoulder strain

Guilbeau was placed on the 10-day injured list with a strained left shoulder Saturday.

The severity of the injury and Guilbeau's expected return date are not yet clear. The lefty owns a strong 1.17 ERA in 7.2 innings this season, but that's come with a 1.83 WHIP and a 3:6 K:BB.