The Mariners called Emerson up from Triple-A Tacoma and will have him stsart at third base and bat ninth in Sunday's series finale versus the Padres, Daniel Kramer of MLB.com reports.
Emerson was summoned for his MLB debut after the Mariners placed Brendan Donovan (groin) on the 10-day injured list Sunday. The 20-year-old Emerson posted a .255 average with seven home runs, 26 RBI, 26 runs scored and 10 stolen bases over 145 at-bats in 38 contests with Tacoma prior to his promotion. In Donovan's absence, Emerson is expected to operate as Seattle's primary third baseman.