CLEVELAND—On Wednesday, the Cleveland Browns’ COVID-19 outbreak has widened and worsened with coach Kevin Stefanski, quarterback Baker Mayfield, and three others starters testing positive, jeopardizing their chances of participating in Saturday’s critical game against the Las Vegas Raiders. In all, Cleveland has 18 players—11 of them starters or regulars—and two coaches on the COVID-19 list. It’s the second straight year the Browns are dealing with a major spike in COVID-19 cases while in the midst of pursuing a playoff spot. Last season, Stefanski had to sit out Cleveland’s wild-card win at Pittsburgh after a positive test. “We’ve been here before,” Stefanski said on Zoom. “Everybody has to step up depending on who’s available.” An NFL spokesman told the Associated Press there has been no discussion of moving Saturday’s game. It’s possible the Browns could have more cases. In the meantime, they’re going forward with an abnormal work week in 2021, …