Josh Hader continues to dominate as the best closer in baseball, securing his 24th save this week for the Houston Astros with a stellar performance against the Cubs and Rockies. His setup man, Bryan Abreu, is also excelling with 21 holds and a remarkable K/BB ratio. Andrés Muñoz returned for the Seattle Mariners, claiming his first save since June 8 after a rough patch, while Edwin Díaz's consistent scoring adds to his impressive season stats. Aroldis Chapman remains a formidable force for the Boston Red Sox, boasting 15 consecutive appearances without an earned run. Meanwhile, rising star Randy Rodríguez is emerging as a potential closer-in-waiting for the San Francisco Giants, leading middle relievers in WAR.