Harris flew back to New York after last night's game to be with his wife who went into early labor at just five months. The child did not survive.
Best wishes to Harris at a time like this that has to be extremely difficult for him and his family.
The Mets called up outfielder Fernando Martinez from Triple-A Buffalo to take Harris' roster spot.
Players can be on the bereavement list a minimum of three days and a maximum of seven.For more baseball news, rumors and analysis, follow @cbssportsmlb on Twitter or subscribe to the RSS feed.