[3] The Milwaukee Brewers signed Strzelecki as an undrafted free agent after the 2018 Major League Baseball draft.

On October 4, Strzelecki earned his first career save after tossing a scoreless ninth inning in a game against the Arizona Diamondbacks.

[9] He made one appearance for the Diamondbacks down the stretch, pitching a scoreless 1+1⁄3 innings against the San Diego Padres.

[13] On November 22, 2024, the Guardians traded Strzelecki to the Pittsburgh Pirates in exchange for cash considerations.

While Strzelecki was pitching at South Florida, his father, Kevin, died of a heart attack at age 52.