The Pirates chose Vieaux in the sixth round, with the 195th overall selection, of the 2016 MLB draft, and he signed with the Pirates for a reported $175,000 signing bonus.[1] Vieaux played in the Pirates farm system, and turned to coaching when the 2020 minor league season was cancelled due to the COVID-19 pandemic.[6]
On June 17, 2022, the Pirates promoted Vieaux to the major leagues.[7] He was designated for assignment on July 11. He cleared waivers and returned to the minor leagues.[8] The Pirates promoted Vieaux back to the major leagues on August 21.[9] On September 6, Vieaux was designated for assignment. He cleared waivers and was sent outright to the Triple–A Indianapolis Indians on September 10.[10] Vieaux elected free agency on October 7.[11]
Los Angeles Angels
On December 31, 2022, Vieaux signed a minor league deal with the Los Angeles Angels.[12] He spent the 2023 season with the Triple–A Salt Lake Bees, making 50 appearances and logging a 4–4 record and 5.23 ERA with 71 strikeouts. Vieaux elected free agency following the season on November 6, 2023.[13]
Tecolotes de los Dos Laredos
On February 13, 2024, Vieaux signed with the Tecolotes de los Dos Laredos of the Mexican League.[14][15] In 31 games (1 start) for Dos Laredos, he posted a 1–1 record and 5.34 ERA with 24 strikeouts across 28+2⁄3 innings pitched.