Seattle manager Scott Servais said Haniger took a home test that was positive and followed up with a subsequent test on the football field that confirmed the original.
“We will continue to test him and hopefully get him back as soon as we can,” Servais said. “So no good news, but you have to deal with these things. It’s everywhere and you’re starting to see a little bit come up around the league, and it’s a little bit in our clubhouse.”
Haniger had started each of the first eight games for Seattle, hitting .176 with three homers and seven RBIs. Haniger had two singles in Friday night’s opening win over Houston.
Servais said he was unsure of the status of any contact tracing that was to take place among others in the clubhouse.
Seattle recalled infielder Donovan Walton of Triple-A Tacoma to take Haniger’s list spot. Walton has previously played a small handful of matches in the left field. Mariners also have a utility player Dylan Moore on the roster. Moore has played 127 away games away from home.