[6] He spent that summer playing in the Cape Cod Baseball League for the Chatham Anglers where he was named an All-Star.

[15] In 2019, his junior season, he was named to the All-Big 12 First Team for the second consecutive year[16] despite missing three weeks due to a broken hand.

[17] In an elimination game during the 2019 NCAA Division I baseball tournament, he hit three home runs and had 11 RBIs in Baylor's 24–6 win over Nebraska-Omaha.

[23][24] He began his professional career with the Rome Braves of the Class A South Atlantic League, spending all of the 2019 season there.

[27] In 2021, he spent a majority of the season with the Mississippi Braves of the Double-A South, slashing .258/.338/.498 with 22 home runs and 52 RBIs over 92 games.

[33] On March 14, 2022, the Braves traded Langeliers, Cristian Pache, Ryan Cusick, and Joey Estes to the Oakland Athletics in exchange for Matt Olson.

[34][35] He was assigned to the Las Vegas Aviators of the Triple-A Pacific Coast League to begin the 2022 season.

[42] During a doubleheader on May 8 against the Texas Rangers, Langeliers drove in a career high of 5 runs in the first game and 3 in the second for a total of 8 RBIs on the day.