The competition for the big guys could be intense.

As the Mets continue toward a resolution on Mickey Callaway — an announcement on his status is expected before the end of the week — six managerial jobs are open in MLB, with perhaps more to come.

Callaway remained in limbo Wednesday in part because of a delay in this week’s organizational meetings due to Rosh Hashana, according to an industry source, but the decision on him will likely be known Thursday or Friday.

Though Callaway is under contract through 2020, the Mets have missed the postseason two straight years under his watch. His fate might lie in the hands of owner Fred Wilpon, as many of the Mets’ key front office officials, according to a source, appear ready to move in a different direction.

The Cubs, Giants, Padres, Pirates, Angels and Royals all have managerial vacancies, with it possible the Phillies will join the parade by dumping Gabe Kapler. If Kapler and Callaway get fired, eight managerial jobs will be open.

And that could benefit top candidates, whether it’s a celebrity manager such as Joe Maddon, Joe Girardi or Buck Showalter or an up-and-comer who is deemed next year’s version of Rocco Baldelli. Moving quickly on the “top-shelf” candidates could be paramount.

The Mets experienced such overlap in their last managerial search, following the 2017 season. Callaway was among the hot candidates that offseason, on the Phillies’ radar, as well as the Mets’. Club officials were also high on Alex Cora, who had already interviewed with the Red Sox — the team that ultimately hired him — by the time he visited with the Mets.

Maddon has already been heavily linked to the Angels, who this week fired Brad Ausmus after only one season. It’s unclear if Mets GM Brodie Van Wagenen has a relationship with Maddon, the former Cubs manager whose name recognition and résumé probably warrant consideration at Citi Field.

Girardi, a Chicago native, could make sense for the Cubs as well as the Mets. Though Showalter hasn’t been heavily linked to one specific opening, he is among the handful of managers who have guided three different organizations into the postseason. A source indicated that Van Wagenen is a Showalter fan, and it’s easy to foresee the former Yankees, Diamondbacks, Rangers and Orioles manager as somebody who would receive an interview.

Other “marquee” types available include Bruce Bochy, Mike Scioscia and John Farrell, all of whom have managed World Series winners. Another notable name, Clint Hurdle, was just jettisoned by the Pirates. Before the Mets hired Terry Collins nine years ago, Hurdle impressed team officials in an interview, but he needed a quick answer because he had received an offer from the Pirates. At the time, general manager Sandy Alderson wasn’t prepared to expedite the managerial search.

Jeff McNeil underwent surgery Wednesday to repair his right distal ulnar fracture (wrist) at the Hospital for Special Surgery. Dr. David Helfet performed the procedure.