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] He made his professional debut with the Low-A West Virginia Black Bears. Vieaux split the 2017 season between the Single-A West Virginia Power and High-A Bradenton Marauders, accumulating a 5-10 record and 3.82 ERA with 81 strikeouts across 141+1⁄3 innings pitched.[6]
Vieaux split the 2018 season between Bradenton and the Double-A Altoona Curve. In 25 starts for the two affiliates, he posted a cumulative 13-6 record and 3.68 ERA with 124 strikeouts across 144+1⁄3 innings pitched.[7] Vieaux made 26 starts for Altoona and the Triple-A Indianapolis Indians in 2019, pitching to a combined 8-6 record and 3.50 ERA with 120 strikeouts over 139 innings of work.[8]
Vieaux turned to coaching when the 2020 minor league season was cancelled due to the COVID-19 pandemic; as a result, he did not play for the organization that year.[9] He returned to action in 2021 with Altoona and Indianapolis. In 25 appearances (13 starts) split between the two affiliates, Vieaux compiled a 7-3 record and 5.28 ERA with 72 strikeouts across 73+1⁄3 innings pitched.[10]
On June 17, 2022, Vieaux was selected to the 40-man roster and promoted to the major leagues for the first time.[11] He was designated for assignment on July 11, after five appearances for the team.[12] Vieaux cleared waivers and was sent outright to Indianapolis on July 15.[13] The Pirates promoted Vieaux back to the major leagues on August 21.[14] He made eight total appearances for Pittsburgh, but struggled to a 10.38 ERA with 15 strikeouts across 8+2⁄3 innings pitched. On September 6, Vieaux was designated for assignment following the acquisitions of Zack Collins and Junior Fernández.[15] He cleared waivers and was sent outright to Triple–A Indianapolis on September 10.[16] Vieaux elected free agency on October 7.[17]
Los Angeles Angels
On December 31, 2022, Vieaux signed a minor league deal with the Los Angeles Angels.[18] 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.[19]
Tecolotes de los Dos Laredos
On February 13, 2024, Vieaux signed with the Tecolotes de los Dos Laredos of the Mexican League.[20][21] 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.
Vieaux was released by the Tecolotes on April 14, 2025.[22] He re-signed with the Tecolotes on May 7.[23] Vieaux made one start for the team, allowing six runs on three hits and three walks in one inning pitched. He was released by Dos Laredos on May 12.[24]
Westside Woolly Mammoths
Following his departure from the Mexican League, Vieaux signed with the Westside Woolly Mammoths of the United Shore Professional Baseball League. Vieaux has collected 3 wins for the team in 3 appearances. On August 16, 2025, Vieaux tossed a six inning perfect game against the Eastside Diamond Hoppers, striking out seven.[25]
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