Keller pairs with Kittredge as Chicago Cubs' late-inning option after Palencia lands on the IL. Keller handles the fireman duties, with Kittredge offering shutdown support. In the wild-card stretch, both can contribute saves or holds, depending on matchup and leverage, making them viable closer/reliever darts for playoff rosters.

Keller has transformed into a crucial late-inning reliever for the Cubs, leading the team with a 1.99 ERA.

Brad Keller, now with the Chicago Cubs, has seen his average fastball velocity jump from 93.8 mph to 97 mph, peaking at 100 mph. This transformation is tied to improved health and mechanical adjustments, leading to a stellar 2.70 ERA.

Keller maintained his composure on the mound despite an intense moment with Vargas, indicating his mental strength and focus during games.

Brad Keller embraces his role in the Cubs bullpen and appreciates the competitive environment compared to his time with the White Sox.