Wielansky begins his first season with the Ducks and fourth in professional baseball. The utility infielder spent the first three seasons of his career (2018-21) in the Houston Astros organization, reaching as high as Triple-A Sugar Land in 2021. He totaled four home runs, 39 RBIs, 64 runs, 86 hits, 16 doubles, five triples, eight stolen bases and a .324 on-base percentage in 122 games during that time.

The St. Louis native combined to play 18 games with Sugar Land and Double-A Corpus Christi in 2021. During the 2019 season, he played 61 games with Single-A Quad Cities, hitting .254 with two homers, 25 RBIs, 33 runs, 53 hits, nine doubles, four triples and a .345 on-base percentage. The 25-year-old began his career with Tri-City in the New York-Penn League in 2018, appearing in 43 games. Wielansky was originally selected by the Astros in the 18th round of the 2018 amateur draft.