Mariners designate Mac Williamson for assignment on Tuesday

The Seattle Mariners have designated outfielder Mac Williamson for assignment.

What It Means:

Williamson will be placed on waivers after struggling to hit with Seattle. The Mariners will replace his roster spot with utility-man Kristopher Negron.

In 128 at-bats this season, Williamson produced a .156 average with 4 home runs and 17 RBI.