Background
Born in Wyandotte, Michigan, Mierkowicz was the son of a factory worker who made gaskets.
Born in Wyandotte, Michigan, Mierkowicz was the son of a factory worker who made gaskets.
He lettered in three sports at Roosevelt High School in Wyandotte and caught the eye of legendary Detroit scout, Wish Egan, during a high school baseball game. But upon graduating from high school, Mierkowicz was called up by the Army in 1942. Mierkowicz was discharged after contracting rheumatic fever and was signed by Egan and the Detroit Tigers.
Mierkowicz played in Hagerstown, Maryland in 1944 and in Buffalo in 1945.
At the end of the 1945 season, with the Tigers in a pennant race, Mierkowicz was called up. Mierkowicz stayed with the team for the World Series and was put in as a defensive replacement for Hank Greenberg in the 9th inning of Game 7.
Mierkowicz did not bat in the Series but he received a World Series ring in his rookie season. In 1946, Mierkowicz spent most of the season in the minor leagues with Buffalo, but he did play in 21 games with the Tigers, batting.190.
In 1948, he appeared in 3 games.
He finished his major career on April 19, 1950 with the Saint Louis Cardinals. He struck out in his one and only at bat for the Cardinals. Mierkowicz continued to play professional baseball until 1957, including stints in Cuba, Mexico, and the Sacramento Solons of the Pacific Coast League in 1955.
After his baseball career ended, Mierkowicz worked for 24 years at a waste treatment plant in Wyandotte, Michigan.
He retired in 1984.
With the death of Virgil Trucks in 2013, Mierkowicz became the last living Tiger to play in the 1945 World Series and the last player to have played against the Cubs in a World Series. There are no living players who played in an earlier World Series for the winning team