In 2019, he split between the Modesto Nuts, Arkansas Travelers, and Tacoma Rainiers, going a combined 6–5 with a 3.57 ERA and 136 strikeouts over 113+1⁄3 innings.
[6] And also, on October 10, 2019, he was selected for the United States national baseball team at the 2019 WBSC Premier 12.
[7] Murfee did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.
[8] In 2021, he split the season between Double-A Arkansas and Triple-A Tacoma, posting a 7-3 record and 4.23 ERA with 97 strikeouts in 78.2 innings pitched across 26 appearances (14 starts).
[12] He made 64 appearances for Seattle in his rookie campaign, pitching to a 4-0 record and 2.99 ERA with 76 strikeouts in 69.1 innings of work.
[19] Murfee made one rehab appearance for the Single–A Fayetteville Woodpeckers but was shut down after experiencing elbow discomfort.