Cincinnati needs reliable setup men. Next in line to pick up saves and bridge the gap to the closer. Need a couple that can setup Diaz and give him the rest while the setup reliever can carry the load at other times. Like the Brewers had with Devin Williams, Josh Hader & Will Smith before, the Yankees with Chapman, Zach Britton & Adam Ottavino once and the Royals had Greg Holland, Wade Davis, Ryan Madson & Kelvin Herrera that shut teams down in the 2015 World Series season. Padres just went out to get the Royals closer to setup Josh Hader. Not a threat to the closer's role but will give Hader some rest down the stretch. It's why the Reds should have jumped the market for Chapman like Texas did giving up next to nothing for him. 2 prospects, only one ranked inside of the team's Top 50. Very good trade for the Rangers. As far as those not sure Diaz is the answer, look at the workload he has handled this year with the 2nd most saves in all of MLB with 32, had an MLB best 27 consecutive saves converted, 6th lowest ERA 2.09 among closers, not sure how much more can be expected of him. Ideally get him more rest but you need a closer like him. In just his 2nd season, progressing along just fine.