ZiPS projects Martin Perez with a 2021 WAR of 1.3 in 135 innings and Nick Pivetta with a 2021 WAR of 1.2 in 113.1 innings:
https://www.fangraphs.com/projections.aspx?pos=all&stats=pit&type=zips&team=3&lg=all&players=0
Off topic but related to thread: With the bases loaded and two outs in the bottom of the ninth inning 20-year-old Julio Rodriguez drove in 21-year-old Jarred Kelenic with the winning run Sunday in the Seattle Mariners' 5-4 win over the San Diego Padres:
MLB Gameday: Padres 4, Mariners 5 Final Score (02/28/2021) | MLB.com
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Follow MLB results with FREE box scores, pitch-by-pitch strikezone info, and Statcast data for Padres vs. Mariners at Peoria Stadium
Baseball America, MLB.com and Baseball Prospectus rank Rodriguez No. 3, No. 5 and No. 3, and Kelenic No. 4, No. 4 and No. 6, on their current Top 100 prospect lists.
It's only Spring Training but Seattle fans take their joys where they can find them.