David Robertson
Robertson is another veteran who will give the Yankees' front office a hard time this winter. Robertson has been highly efficient with his production. David pitched 69.2 innings in 2018, playing 69 games and posting an ERA of 3.23 and a WHIP of 1.03. These stats are too good to let him walk away.
The issue with signing Robertson back will be the amount of competition involved. Many teams will see Robertson as a closer and obviously offer him more money. Robertson is certainly better than many pitchers on various teams designated to pitch the ninth inning and this might result in those teams paying him that extra value of a closer.
The question still remains if David Robertson would move away from the Bronx for better money like earlier in his career. The recent firing of his agent is somewhat of a clue that he doesn't intend to go anywhere else.