Masahiro Tanaka is almost everything the Yankees paid for

Masahiro Tanaka has not been as good as 2014 Masahiro Tanaka or 2018 first-half Luis Severino, but it has been close enough to provide a second-half ace to the Yankees. And it has been good enough to make me think about a big-picture question: Has Tanaka been worth his seven-year, $175 million price tag? Of…