Blue Jays all-time best bullpen based on WAR

Houston Astros v Toronto Blue Jays
Houston Astros v Toronto Blue Jays / Tom Szczerbowski/GettyImages
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Roberto Osuna, 6.5 fWAR

Signed as a 16-year-old free agent out of Mexico in 2011, Roberto Osuna compiled an impressive 6.5 fWAR through three-plus seasons in Toronto.

He burst onto the scene in 2015 as a 20-year-old after throwing only 120 1/3 innings across three seasons in the minor leagues. He racked up 75 strikeouts in 69 2/3 innings and finished the year with 20 saves, seven holds and a 2.58 ERA. Voters even considered him for the Rookie of the Year, and he finished fourth in the voting.

Osuna saved 36 games the following year and another 39 in 2017, the year he made his lone All-Star appearance.

He helped the Jays get to the playoffs in 2015 and 2016 and pitched to a 1-1 record with two saves and a 1.17 ERA over 14 postseason games.

The youngster appeared in 221 games for Toronto, throwing 223 innings and saving 104 games, the third-most in team history. He finished with a 2.87 ERA as a Blue Jay, and his 0.92 WHIP still stands as the best among qualified Jays relievers.

As quickly as he appeared on the scene, and as bright as his future appeared, Osuna's career in Toronto came to a crashing halt after he was arrested and charged with assault in May of 2018 in relation to a domestic violence incident.

He was suspended for 75 games under the league's domestic violence policy (the case never made it to court, as he agreed to a peace bond) and never pitched another inning for the Blue Jays, who traded him to the Houston Astros two months later.

He was with the Astros until 2020 and has bounced around ever since, playing with various teams in Mexico and Japan.

Next: This Blue Jays reliever received Rookie of the Year and Cy Young votes in 1986