SANTA CLARA — Star linebacker Fred Warner became the most prominent 49ers player to go on the league’s COVID-19 reserve list, this explaining his surprise absence from Sunday’s practice.
The 49ers have not had a player on that list the past four weeks, not since activating their only two other players — Richie James Jr. and Jeff Wilson Jr.
The 49ers did not not can not disclose if Warner has the coronoavirus or if he merely came into contact with someone that does. Players have been tested daily s. . .