Fields signed a minor-league contract with the Brewers on Tuesday.
Fields will join the Brewers in major-league camp after being designated for assignment and subsequently released by the Dodgers earlier in the month. He's expected to open the season in the minors, per Tom Haudricourt of the Milwaukee Journal Sentinel, but seeing as the veteran reliever owns a 2.61 ERA, 1.04 WHIP and 115:34 K:BB across 117.1 innings over the last three seasons, he should eventually factor into the bullpen picture for Milwaukee.