The state of the Yankees rotation is shaky at best right now, with precious little in the way of certainty beyond Luis Severino. CC Sabathia has been excellent, but he’s a 38-year-old with balky knees and a ton of mileage on his arm; Masahiro Tanaka has been subpar and inconsistent, seemingly alternating good and bad starts; Sonny Gray is one of the worst starters in baseball in 2018; and the fifth starter’s spot is currently a revolving door. As such, the Yankees have a clear-cut need for at least one starting pitcher – preferably one that can be counted on in key games down the stretch and in the playoffs.