Canning will continue to be further evaluated over the next few days, but Tommy John surgery could be on the table. The 23-year-old right-hander apparently felt discomfort after making his Cactus League debut on Wednesday.

Canning posted a 4.58 ERA and 1.22 WHIP with 96 strikeouts and 30 walks over his first 90 1/3 major league innings in 2019.

Verlander only missed one start since aggravating his groin earlier this week. A start on Tuesday would be a strong indicator that he will be ready for the start of the 2020 season.

Verlander won the Cy Young award in 2019, throwing 300 strikeouts in 223 innings pitched during the season. If healthy, he'll be one of the top pitchers in the league again for 2020.

McCullers missed the entire 2019 season while recovering from Tommy John reconstructive elbow surgery. The 26-year-old right-hander should be good to go for the start of the regular season.

McCullers recorded a 4.25 ERA in 2017 and a 3.86 ERA in 2018 after posting a 3.22 ERA in each of his first two major league seasons.

Soroka missed a turn in the spring rotation after tweaking his groin in batting practice last week. The 22-year-old right-hander should be fine for the start of the regular season.

Soroka recorded a 2.68 ERA and 1.11 WHIP over 174 2/3 innings last season. He went 13-4 in 29 starts.

Paxton underwent surgery to remove a cyst from his spine on February 5. He's making progress and should be able to make his debut by the beginning of May.

Paxton went 15-6 with a 3.82 ERA in 29 starts last season.