2024

• Signed a minor league contract with the Arizona Diamondbacks where he played for the Triple-A Reno Aces.
• In 25 games with the Aces, he posted a 0-5 record and struggled to a 9.57 ERA.
• Chalmers signed with the High Point Rockers on July 2, 2024.

2023

• Did not play during the 2023 season

2022

• Chalmers signed a minor league contract with the Los Angeles Dodgers.
• He appeared in 13 games for the Triple-A Oklahoma City Dodgers where he struggled to a 8.31 ERA.
• On August 19, 2022, he signed a contract with the Gastonia Honey Hunters where he started in seven games.
• With Gastonia, he struggles to a 6.87 ERA after allowing 29 runs in 38 innings of work.

2021

• Promoted to play for the Double-A Wichita Wind Surge for the 2021 season where he appeared in five games.
• In 12 innings of work, Chalmers struggled to a 9.49 ERA before being designated for assignment by the Twins
• Chalmers signed a minor league contract with the Chicago Cubs organization in June of 2021.
• He was assigned to play for the Double-A Tennessee Smokies where he started in 14 games and posted a 5.37 ERA.
• Made one appearance with the Triple-A Iowa Cubs

2019

• Chalmers was assigned to the Fort Myers Miracle where he started in five games after recovering from his injury.
• After 21 innings of work, he posted a 1-1 record with a 3.88 ERA.

2018

• Returned to play for the Beloit Snappers but only appeared in two games before sitting out for the remainder of the season due to an injury.
• In August of 2018 he was traded to the Minnesota Twins, he did not pitch after being traded.

2017

• Assigned to the Single-A Beloit Snappers where he appeared in ten games with five starts.
• He collected a 2-2 record with a 4.34 ERA in 29 innings of work

2016

• Spent the 2016 season with the Vermont Lake Monsters where he made 15 appearances with 13 starts.
• Chalmers posted a 5-4 record with a 4.70 ERA in his 67 innings of work.

2015

• Drafted by the Oakland Athletics in the 3rd round of the 2015 MLB draft
• Signed with Oakland, forgoing his commitment to college baseball at the University of Georgia.
• Chalmers made his professional debut for the Arizona League Athletics where he posted a 0-1 record with a 2.66 ERA in his 11 appearances.

High School

Attended Lakeview Academy in Gainesville, Georgia for two years before transferring to North Forsyth High School in Cumming, Georgia.