MLB DEBUTS View this post on Instagram A post shared by Seattle Mariners (@mariners) Adam FraizerAlan BusenitzAustin MeadowsAustin CoxChris BeckBrandon MarshClarke SchmidtSam ClayDylan CeaseGarrett WhitlockJahmai JonesJeremy BeasleyJordan WalkerJosh LesterMike PapierskiNick NeidertNolan JonesRowdy TellezClint FraizerChristin StewartEdouard JulienTaylor WallsTyler Austin