In 2018, he was with Fresno. He was named the Pacific Coast League Pitcher of the Week for the weeks of June 11–17 after tossing 723 scoreless innings and only allowing one hit (with two outs in the eighth inning) and two walks.
Thornton finished 9–8 with a 4.42 ERA in 24 games (22 starts) for the Grizzlies.
Thornton was traded to the Toronto Blue Jays for Aledmys Daz on November 17, 2018. A few days later, the Blue Jays added him to their 40-man roster.
Thornton was named to the Opening Day roster on March 26 after participating in the 2019 spring training. On March 31, he made his Major League Baseball debut, starting against the Detroit Tigers.
He pitched five scoreless innings and set a new franchise record for strikeouts in an MLB debut with eight.
Thornton won his first professional game on May 14 against the San Francisco Giants, allowing two runs in 52/3 innings while striking out seven batters.
In the interleague game, which Toronto won 7–3, he had two hits and two runs.
Thornton pitched in three games for the 2020 Toronto Blue Jays, posting a 0-0 record with an 11.12 ERA and six strikeouts in 52/3 innings pitched.
In 49 innings with the Blue Jays in 2021, he went 1-3 with a 4.78 ERA and 52 strikeouts.
Is Trent Thornton Married?
Trent Thornton is not married yet.