Why was Yankees' Dellin Betances pitching in a blowout?

Dellin Betances Is Back. Yankees Hope His Fastball Returns, Too. - The New York Times

The Yankees are protecting their bullpen unlike any MLB team

Yankees News: Dellin Betances to Begin Season on IL with Shoulder Injury, News, Scores, Highlights, Stats, and Rumors

The Yankees and Red Sox have a whole new ballgame -- literally -- as they finally face off again

Dellin Betances - Wikipedia

Dellin Betances of Mets must prove he still has all-star fastball

Yankees' Dellin Betances Loses in Arbitration, and a War of Words Begins - The New York Times

Bad Bats, Boone's Blunders, and Boston's Bullpen Combined to Kill the Yankees - The Ringer

Here's why Yankees need to stick with Dellin Betances as the closer – New York Daily News

1 Double and 2 Errors Later, Austin Romine Scores the Yankees' Winning Run - The New York Times