In his senior season, he hit .469 with 10 home runs and 20 stolen bases and was named an All-American by Louisville Slugger, MaxPreps, and Under Armour.

[9] Raleigh made his professional debut that summer with the Low-A Everett AquaSox, batting .288 with eight home runs and 29 RBIs in 38 games.

He started 2019 with the High-A Modesto Nuts, where he was named a California League All-Star[10] before being promoted to the Double-A Arkansas Travelers in mid-July.

[12] Raleigh practiced and scrimmaged at the Mariners' alternate site in Tacoma in 2020[13] but did not play in a game because the minor league baseball season was cancelled due to the COVID-19 pandemic.

[17] Raleigh recorded his first career hits and RBIs with a two-RBI double and single against Germán Márquez of the Colorado Rockies on July 20.

[18][19] On July 23, Raleigh hit his first MLB home run, a two-run, 444-foot blast off Oakland Athletics starter Frankie Montas.

[20] Splitting time at catcher with Tom Murphy, Raleigh finished the 2021 season with a .180/.223/.309 slash line, 2 home runs, 13 RBIs, and 52 strikeouts in 47 games.

[21] Raleigh started 2022 continuing to struggle to make contact, with an .083 batting average and striking out in 32 percent of his plate appearances in his first nine games.

[24] After another 10 games with a .091 average, Raleigh's bat blossomed, hitting .228 with an .854 on-base plus slugging and 24 home runs the rest of the season.

[22][24][25] On September 30, Raleigh hit a pinch-hit, walk-off home run against the Athletics[26] to clinch the Mariners' first postseason appearance since 2001,[2] ending the longest active playoff drought amongst the four major North American sports leagues.

[32][33] He was a finalist at catcher for the Gold Glove and Silver Slugger awards, losing to Jose Trevino of the New York Yankees and Alejandro Kirk of the Toronto Blue Jays, respectively.

[42][43] On June 10, Raleigh hit a walk-off grand slam off Jordan Leasure, capping off a 8–4 comeback win over the Chicago White Sox.