Here’s the rundown:

* Mayor Bloomberg is opening the Bronx Family Justice Center.

* Nine trustees of former Mayor Ed Koch’s new reform coalition will be announced today, and the signed pleges from four abogubernatorial hopefuls (including one “as-yet unannounced” hopeful) will be released.

* Officials rally with doorman’s union 32BJ as a strike looms.

* After a last-minute move to keep OTB afloat, The Post’s Fred Dicker hosts OTB chairman Meyer ”Sandy” Frucher and Siena College’s Steve Greenberg with the latest Siena poll.

* The city’s new homeless commissioner will be announced around noon.