CHICAGO — Bullpen volatility from year to year often presents one of the biggest challenges a major-league team faces when constructing a roster.

The Chicago Cubs pulled all the right levers this past season in building a relief corps that was one of the best in baseball in the first half and helped them win their first postseason series since 2017. President of baseball operations Jed Hoyer and the front office is charged with trying to reload a bullpen that returns only Daniel Palencia from its high-leverage arms.

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