1:08 AM ETJeff PassanESPN CloseESPN MLB insiderAuthor of “The Arm: Inside the Billion-Dollar Mystery of one of the most Valuable Commodity in Sports”A Cincinnati Reds gamer tested favorable for COVID-19 on Friday, jeopardizing the teams video game Saturday against the Pittsburgh Pirates and reigniting fear of another break out in the sport after a pair of outbreaks seriously impacted the opening weeks of the season, sources informed ESPN.The teams were notified of the favorable test after their game in Cincinnati on Friday. The reported favorable began the eve of the St. Louis Cardinals, who have not played since July 29, returning to the field versus the Chicago Cubs.The Athletic first reported that a Reds player had checked positive.Outside of St. Louis, Major League Baseball had reported no favorable tests in the previous two weeks, leading to hopes in the sport that after the outbreaks amongst the Cardinals and, earlier in the season, the Miami Marlins, that the sport might discover a duration of calm.1 RelatedThat wont hold true over the next few days, as the Reds begin the contact-tracing procedure and possibly isolate gamers who entered contact with the contaminated player.Multiple times have the Reds feared COVID-19 concerns, only for them to be unfounded. 3rd baseman Mike Moustakas and outfielder Nick Senzel self-reported symptoms and spent days on the hurt list before negative tests allowed them to be restored. Baseman Joey Votto spent one day on the IL prior to returning. And while infielder Matt Davidson checked favorable, follow-up tests were unfavorable, resulting in the belief his first outcome was a false positive.The Reds are most likely to undergo increased screening beyond the standard every-other-day saliva test, and with the incubation duration for the virus thought to be in between 2 and 10 days, the most likely post ponement of Saturdays game might encompass Sunday and even beyond, sources said.MLBs deepest issue regards potential team-to-team transmission. No positive cases of on-field transmission appeared on the Philadelphia Phillies following their July series against the Marlins, nor on the Minnesota Twins, who last played the Cardinals. The Pirates might be subject to increased testing nevertheless.The Reds, a stylish preseason playoff choice, transferred to 9-11 with an 8-1 victory against the Pirates on Friday.