Given the New York Mets early-season struggles, some fans may already feel frustrated with the club. For longtime supporter and radio personality Sid Rosenberg, however, it was not the team’s play on the field that pushed him away—it was a front-office decision.
Rosenberg publicly announced this week that he is finished supporting the Mets after the organization reportedly chose not to hold a Jewish Heritage Night during the 2026 season. The outspoken host said the move was the final straw in a growing list of frustrations he has had with the franchise.
The controversy followed a separate moment involving Mr. and Mrs. Met meeting with Zohran Mamdani, which Rosenberg criticized. He later referred to the team as the “Mamdani Mets,” expressing displeasure with the organization’s direction. Rosenberg also said he felt ignored during a recent visit to the ballpark despite being a lifelong fan.
In response, Rosenberg has now declared himself a supporter of the New York Yankees. He posted on social media that the Yankees have been more welcoming and cited positive interactions with team president Randy Levine. Rosenberg also praised what he viewed as the Yankees being more aligned with his personal values.
The switch was symbolic as well as verbal. Rosenberg said he wore a Yankees jersey for the first time in 59 years this week, marking what he called the official transition from Mets fan to Yankees fan. He wrote "The official transition from a lifelong Met fan to a Yankee fan is now underway. Go woke. go Broke!". He then showed no misgivings after the conversion to the pinstripes. He continued on his famous radio show on 77 WABC "The Mets are a disgrace ... Now I'm happier than ever that I did what I did last night."
The story sparked strong reactions online. Some commenters agreed with Rosenberg’s frustration and argued that Jewish Mets fans represent an important part of the team’s fan base. Others said the issue reflected broader dissatisfaction with decisions made by the organization in recent years.
Still, not all fans shared the same view, and many sports followers pointed out that team allegiances are often emotional and deeply personal. For lifelong supporters, disagreements with ownership or management can sometimes feel just as significant as wins and losses on the field.
Rosenberg continued discussing the matter on his 77 WABC radio program, saying he has no regrets about making the switch. He also predicted that public backlash could eventually lead the Mets to reconsider their decision.
Whether the Mets respond or not remains to be seen. But in a city where baseball loyalties often run deep, Rosenberg’s dramatic change of heart has quickly become one of the more talked-about off-field stories of the week.