NEW YORK (WFAN) — General manager Sandy Alderson joined Boomer & Carton Wednesday, one day after introducing Terry Collins as the 20th manager in Mets’ history.

Alderson clued WFAN’s listeners in on when the Mets decided on Collins.

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“I think we had a pretty good idea on Thursday of last week when we finished our interviews,” said Alderson. “We all talked briefly and really reached the same conclusion, but we put off the final decision until Sunday.”

Collins has been plagued by reports of unhappy players from his past. Alderson addressed the concerns.

“We talked about what happened in Anaheim, what happened in Houston, what happened in Japan,” Alderson explained. “We asked about many aspects of his career, some of which ended extremely well, some less so.

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“Terry has spent a long time now in player development since that last managerial assignment. I think he’s somewhat a different person, but still retains the same intensity. I think that’s going to be a benefit to us.”

Alderson believes Collins has changed — but his strengths are in on-field management.

“Terry was not hired because he would have an impact on the clubhouse, he was hired because he’d have an impact on the field.”

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LISTEN: Sandy Alderson with Boomer & Carton