Jacob deGrom was held out of pitching live batting practice for three days as a precaution due to tightness in the left side of his groin. He said he feels fine and is expected to throw to live batters for the first time on Sunday. … The Mets had their union meeting discussing MLB's domestic violence policy Saturday. With Jose Reyes, Aroldis Chapman and Yasiel Puig having cases in front of the commissioner, team rep Matt Harvey said it was important that they discuss it, "particularly with the younger players." "We want to try and help avoid these situations," Harvey said. "It's an important topic." … Terry Collins named righthander Rafael Montero the starter for the Mets' first Grapefruit League game, Wednesday in Viera against the Nationals. … The Mets will hold their intrasquad scrimmage Tuesday.