OWINGS MILLS, Md. -- A short week became even more challenging for the Baltimore Ravens heading into Thursday night's game at the undefeated Pittsburgh Steelers. On Tuesday, the Ravens canceled practice after learning of more positive coronavirus tests Tuesday morning, according to a source. The team has had five players and four staffers test positive this week, sources told ESPN's Adam Schefter. On Monday, the team announced that two players -- running backs J.K. Dobbins and Mark Ingram -- tested positive for COVID-19. All team activities are now virtual. In addition, defensive tackle Brandon Williams was placed on the reserve/COVID-19 list as a close contact. An NFL spokesman said Tuesday there is no change to the status of Thursday night's game. "We will continue to monitor developments in consultation with our medical experts," the spokesman said. "Our foremost concern is the health and safety of players, coaches and game-day...