Teammate Nick Castellanos said after Tuesday's game that Moustakas is testing negative for COVID-19 but can't play until at least Thursday, John Fay of The Cincinnati Enquirer reports.
Moustakas was placed on the COVID-19 injured list Sunday after waking up not feeling well, but he was apparently only showing similar symptoms to coronavirus and has tested negative. It's unclear if the Reds expect the 31-year-old to be ready to play Thursday, but that's apparently the front end of his return timeline.