Diamondbacks general manager Kevin Towers will have the ability to add payroll at the trade deadline. Arizona president/CEO Derrick Hall told FOX Sports as much on Tuesday. "We've got the flexibility," Hall said. "Our ownership group is willing to invest in this team. We've told KT, 'If we're in it, we'll do whatever it takes to support you.'" Arizona opened the season with a payroll of $53.6 million, sixth-smallest in the majors.