Cubs manager Rick Renteria said Thursday that he does not have a designated closer at this point. Pedro Strop had an opportunity to grab the job, but he was lit up for four runs in the top of the ninth inning Wednesday as the Cubs fell in brutal fashion to the Diamondbacks. "It's organic," Renteria said. Justin Grimm, James Russell, Hector Rondon, Jose Veras, and Strop could all see save opportunities going forward.