Mets' Brodie Van Wagenen believes Brandon Nimmo could start rehab assignment 'very soon'Van Wagenen says "he's been progressing well"8/14/2019, 8:38 PMSep 15, 2018; Boston, MA, USA; New York Mets right fielder Brandon Nimmo (9) rounds the bases after hitting a three run home run during the fourth inning against the Boston Red Sox at Fenway Park. Mandatory Credit: Bob DeChiara-USA TODAY Sports / Bob DeChiara