'Couple' Seattle Mariners players to miss Blue Jays series in Toronto over COVID-19 vaccine 12:57 PM ET Associated Press NEW YORK -- Seattle Mariners manager Scott Servais said "a couple players" won't make the trip for the three-game series that starts Monday at Toronto because of the Canadian government's COVID-19 vaccine mandate. Speaking before Sunday's series finale at the New York Mets , Servais did not identify which players will be unavailable. Canada requires anyone entering the country to have received two doses of a COVID-19 vaccine, the second at least 14 days before entry. Left-hander Roenis Elías, 33, was in the clubhouse at Citi Field on Sunday, and Servais said he likely will be added to the active roster by Monday. Elias has a 4.30 ERA in one start and 10 relief appearances at Tacoma of the Triple-A Pacific Coast League, striking out 11 and walking four in 14⅔ innings. Elias last appeared in the major leagues with Washington in 2019.