Lamar Jackson has tested positive for the coronavirus (COVID-19), it was reported Thursday.Sources told NFL Network's Ian Rapoport that the Ravens quarterback and reigning NFL MVP returned a positive test. No date ofthe test was reported, just that Jackson tested positive.Sources: star QB Justin Britt Jersey Lamar Jackson tested positive for COVID-19. Ian Rapoport (@RapSheet) ESPN's Jamison Hensley .MORE: Jackson's reported positive test is the latest bad news for Baltimore. The Ravens had their Thanksgiving night matchup vs. the Steelers postponed after several positive tests surfaced, with running backs Mark Ingram and JK Dobbins the notable names. ESPN's Adam Schefter reports that the chances Cortez Kennedy Jersey of Sunday's game being played are "diminishing quickly."Per Schefter, Ravens head coach John Harbaugh will not allow players into the facility until Monday, leaving C. J. Prosise Jersey Sunday's game in doubt.Ravens HC John Harbaugh just confirmed to ESPN that he told the team tonight that players will not be allowed to go into the training facility until Monday at the earliest. Adam Schefter (@AdamSchefter) Chris Carson Jersey The game was rescheduled for 1:15 p.m. ET Sunday,but the latest round of test results have clearly put the matchup in doubt, withthe results of subsequent tests likely being the determining factor.Statement from the Baltimore Ravens. Baltimore Ravens (@Ravens) Pro Football Talk that a decision on when the game will be played is expected Friday.The Ravens D.J. Fluker Jersey have had several positive tests in recent weeks, and the organization decided to suspend a staff member for "conduct surrounding recent COVID-19 positive cases that have affected players and staff." The Athletic's Jeff Zrebiec that strength and conditioning coach Steve Saunders was the staffer.This story has been updated.