Mariners facing COVID-19 concerns due to unvaccinated personnel?

One day after Chicago Cubs president of baseball operations Jed Hoyer told reporters that "optimism is waning" his club will hit the 85% vaccination threshold that allows MLB to loosen certain health and safety protocols, a different team encountered virus-related headaches. 

ESPN's Jeff Passan reports at least one member of the Seattle Mariners' traveling party tested positive for COVID-19, which is worrisome because the Mariners are allegedly "among the least-vaccinated teams in MLB" and have "a significant portion of players" who haven't received shots. 

As of Friday afternoon, the night game between Seattle and the San Diego Padres remained scheduled. 

MLB and the MLB Players Association are not forcing players, coaches or other personnel to receive vaccine shots to participate in the season. Earlier in the day, though, the league announced that 14 clubs have reached the 85% vaccination threshold. Additionally, 84.4% of all Tier 1 players, managers, coaches, trainers and other essential employees are partially or fully vaccinated. Of those individuals, 78.8% are considered fully vaccinated.

The Mariners head into Friday's action at 21-23 overall and third in the American League West standings, five games behind the first-place Houston Astros.