23-year-old Jaguars running back who has COVID-19 has been hospitalized twice and already ruled out for the rest of the season

• According to ESPN, Jacksonville Jaguars running back Ryquell Armstead has been hospitalized twice with COVID-19 and has already been ruled out for the season.
• Armstead was placed on the NFL's reverse/COVID-19 list in September and has since had a "variety" of complications and "significant" upper-respiratory issues.
• Several NFL players have returned to the field from COVID-19 cases, and Armstead's is the worst known case for one of the league's athletes.

Jacksonville Jaguars running back Ryquell Armstead has had an unexpected tough battle with COVID-19 and has been ruled out for the rest of the season, according to ESPN's Adam Schefter.

The 23-year-old Armstead was put on the NFL's reserve/COVID-19 list on August 21, during training camp. He came off the list briefly and then was placed back on it again in early September.

Since then, according to Schefter, Armstead has been hospitalized twice with "significant" upper-respiratory issues and a "variety of complications."

When Armstead was placed on the list in September, Jaguars head coach Doug Marrone said that he couldn't place a timetable on Armstead's absence but that the running back would "be out for a while."

While several NFL players have tested positive for COVID-19, missed games, then returned to the field, Armstead's case is the most severe known case in the league to date. The long-term effects of COVID-19 on athletes have been a subject of debate since sports have returned in the US.

The seven-day average of new daily cases of the novel coronavirus hit a new high in the US over the weekend.