Under normal circumstances, we’d be talking about the Ravens playing Kansas City as another coming-of-age opportunity to prove themselves and get over the hump after falling to the Chiefs in each of the last three years. After an extraordinary run of injuries in a matter of weeks, however, Baltimore looks more like a team just trying to hold on and find itself at the moment. That hardly means the season is over — far from it — but playing the healthy Chiefs this early doesn’t bode well for a John Harbaugh team already playing on a short week and coming off its first season-opening loss since 2015. Taking down Kansas City won’t be easy, but that’s why they play the games and a packed M&T Bank Stadium will have something to say about the popular expectation entering this one. The Ravens are also 15-2 in prime-time home games — even if the Chiefs handed them that second loss in Week 3 last year. It’s time to go on the record as these teams meet for the 11th time in the regular season with Kansas City owning the 7-3 advantage and having won the last four meetings dating back to 2015.