[1] He played collegiate summer baseball with the Bellingham Bells in 2016 and 2017, then the Wareham Gatemen of the Cape Cod Baseball League in 2018, where he was named an all-star and the playoff most valuable player after Wareham's league championship.

[10] He started his professional career that June with the Everett AquaSox before being promoted in mid-July to the West Virginia Power.

[19][20] He also started wearing corrective lens to address vision issues, including astigmatism.

[19] Shenton was on the Biscuits for a third consecutive season to start 2023, then advancing to the Triple-A Durham Bulls in July.

[24] He made his major league debut on March 31 as a defensive replacement, hitting a flyout in his first at bat.

[25][26][27] He got his first MLB hit and RBI on a groundball double off Dakota Hudson of the Colorado Rockies on April 7.

[30] On September 5, the Rays recalled Shenton from Triple-A after posting a slash line of .258/.361/.497 in 83 games with 20 home runs and 65 RBI following his demotion.

[32] On November 19, 2024, Shenton was traded back to the Seattle Mariners for cash considerations.

[19][4] He grew up with an older brother, Ian, Andreas's son, who suffered from seizures and developmental disabilities.

Shenton has raised money and donated part of his draft signing bonus to the Max Higbee Center, a nonprofit organization supporting teens and adults with developmental disabilities in his hometown of Bellingham.