MLB rumors: Ex-Yankees reliever Dellin Betances could be one and done with the Mets
Mets History Diving: When was the last time there was no ex-Yankee on the roster?
Dellin Betances - Wikipedia
Yankees four-time All-Star Dellin Betances retires
Dellin Betances (@dbetances68) • Instagram photos and videos
Conforto HR, 5 RBIs helps Mets beat Orioles
NY Yankees spring training: Dellin Betances late, wife gives birth
Source: Mets RHP Dellin Betances Has Begun Rehabbing From Shoulder Surgery - Sports Illustrated New York Mets News, Analysis and More
Mets: On How And Why Dellin Betances May Be On His Way Out Of Town
Pete Alonso calls for return of Mets' black jerseys
New York Mets' Dellin Betances starts new chapter in same city - ESPN
Mets welcome Dellin Betances, 01/02/2020
Dellin Betances Joins the Mets on a One-Year Deal - The New York Times
Former Yankees, Mets Reliever Dellin Betances Retires After 10 MLB Seasons, News, Scores, Highlights, Stats, and Rumors
New York Mets: The bullpen is poised to rebound after an unlucky 2019