David Robertson did such a good job replacing Mariano Rivera that the Yankees might now have a more difficult time replacing Robertson, Joel Sherman of the New York Post writes. Dellin Betances and Andrew Miller have big-time talent, but have also both had frustrating seasons in the recent past. The Yankees could pursue a closer like Jason Grilli, or perhaps mix and match Betances and Miller at closer. The team has plenty of strong bullpen pieces, but no one who represents the obvious fix for the closer role that Robertson did last year. Here’s more out of the Bronx.