The Cubs lost some pitching depth but simultaneously cleared up a spot on the 40-man roster Tuesday afternoon.

Pitching prospect Ryan Jensen was claimed on waivers by the Seattle Mariners, per the Cubs transactions page on MLB.com.

The Cubs added Jensen to the 40-man roster this winter, protecting him from the Rule 5 Draft. The 25-year-old right-hander was the team’s 1st-round pick (27th overall) in 2019 out of California State University, Fresno.

Jensen was ranked 21st on Lance Brozdowski’s preseason Cubs prospect list.

Jensen was moved from the rotation to the bullpen early this season and spent the last two months with Triple-A Iowa.

Overall, he pitched to a 5.77 ERA and 1.89 WHIP in 30 outings this year between Iowa and Double-A Tennessee. He struck out 66 batters in 53 innings but had issues with control (46 walks).

He spent most of his career in the Cubs system as a starter and posted a 2-4 record and 4.25 ERA last year in 17 starts.

That leaves the Cubs with a handful of arms available in the minor leagues who are currently on the 40-man roster — a list that includes Ben Brown (who is currently on the IL) as well as a quartet of pitchers who have spent time in Chicago this season (Keegan Thompson, Michael Rucker, Anthony Kay and Jeremiah Estrada).

The Cubs’ 40-man roster now stands at 38 players.