Seattle Mariners RHP Andres Munoz has emerged as a top-tier relief pitcher this season, leading the majors in saves and maintaining a perfect 0.00 ERA as we approach June. His performance has solidified his role as a fantasy favorite, especially considering his past injury history. With 17 saves already, Munoz is on track to surpass his previous career high of 22 saves. The Mariners' bullpen, while ranked 10th in the league with a 3.43 ERA, relies heavily on Munoz, who accounts for nearly all of their saves this season. Teammates Carlos Vargas and Gabe Speier are also contributing, with Speier being noted for his strikeout potential.

Other noteworthy relief options include Jason Adam of the San Diego Padres, who boasts impressive stats and a strong fantasy point tally. Meanwhile, Will Vest from the Detroit Tigers has also shined, converting saves and maintaining a low OPS against left-handed hitters. Not all news is positive, as some pitchers like Yankees RHP Devin Williams are struggling, highlighting the volatility of relief pitching in fantasy leagues.