5/1/2016
Oakland A's sign Joey Butler and release Dan Robertson
Pittsburgh Pirates release Tony Sanchez and Deolis Guerra and sign Kirby Yates and Tyler Holt
5/8/2016
Tampa Bay Rays sign Alex Pressley and release Jemile Weeks
5/18/2016
Atlanta Braves sign Darwin Barney
5/21/2016
Pittsburgh Pirates sign Alex Pressley and release James Jones
5/22/2016
Cincinnati Reds trade Jerome Williams to the Arizona Diamondbacks for Ryan Burr
5/31/2016
San Francisco Giants release Juan Perez
Oakland A's sign Joey Butler and release Dan Robertson
Pittsburgh Pirates release Tony Sanchez and Deolis Guerra and sign Kirby Yates and Tyler Holt
5/8/2016
Tampa Bay Rays sign Alex Pressley and release Jemile Weeks
5/18/2016
Atlanta Braves sign Darwin Barney
5/21/2016
Pittsburgh Pirates sign Alex Pressley and release James Jones
5/22/2016
Cincinnati Reds trade Jerome Williams to the Arizona Diamondbacks for Ryan Burr
5/31/2016
San Francisco Giants release Juan Perez