UPDATE: Jon Heyman of SI.com believes A-Rod and Boras could be positioning themselves to use Rodriguez’s opt-out clause in order to weasel a “fat extension” out of the Yanks.

A-Rod might opt out, Fans rejoice

Alex Rodriguez, underachieving superstar by day, children’s author by night, had an action-packed Tuesday, nearly inciting a brawl between reporters and police officers at a bookstore press conference, and appearing on several morning shows such as “Live With Regis and Kelly” and “Martha.” His scheduled appearance on NBC’s “Today” show was scratched off the itinerary due to the A-Rod camp’s insistence that Matt Lauer be limited in his line of questioning. Such agreements violate NBC News policy. All this hoopla was in the name promoting Rodriguez’s second children’s book, “Out of the Ballpark,” a work of “autobiographical fiction” according to the author’s publisher.

However the morning after, no one is discussing the book. That’s because in typical E-Rod fashion, the slugging third baseman badly blundered when asked by reporters …

You know the glare, you know the dome. But what you didn’t know is that the greatest leader in the NHL’s history is eyeing a return to the league – as General Manager of the New York Rangers.

Says Mess:

“I’m going to have discussions with Glen. I don’t know how long Glen is going to keep doing it. Maybe he’ll continue for another five or 10 years.

“I just know New York fits best for me and my family. And this is what I know best and what I love the most.”

Messier has spent a lot of time around the Rangers this season, and plans on making New York his primary residence in the near future, enrolling his two young toddlers in school there.

Says current Rangers’ GM Glen Sather:

“We’d have to sit down and figure out a lot of details. The first thing would be to be sure it’s what he really wants to do because it’s not something you can work at part time. I talked to him previously, just last …