Rodriguez will earn $8.3 million rather than his request for $8,975,000. The case was decided by arbitrators Steven Wolf, Walt De Treux and Melinda Gordon, who heard the argument Wednesday.
A left-hander who turns 27 in April, Rodriguez was a career-best 19-6 with a 3.81 ERA in 34 starts last season, when he made $4,325,000. He is eligible for free agency after the 2021 season.
Dodgers reliever Pedro Baez has been the lone player to win his salary arbitration.
All-Star closer Josh Hader went to a hearing with Milwaukee on Thursday after just making the eligibility cutoff with 2 years, 115 days of major league service. Hader asked for a raise from $687,600 to $6.4 million, and the Brewers argued for $4.1 million. A decision from arbitrators Mark Burstein, Dan Brent and Frederic Horowitz is expected Friday.
A shaggy-haired left-hander who turns 26 in April, Hader had 37 saves in 44 chances and went 3-5 with a 2.62 ERA in his second straight All-Star season. He failed to hold a 3-1 lead in the eighth inning of the NL wild-card game, loading the bases by hitting one batter, walking another and allowing a bloop single, then giving up a two-out, bases-loaded single to Washington's Juan Soto that scored three runs. The Nationals won 4-3 and went on to their first World Series title.
Seven players remain scheduled for hearings, which run through Feb. 21.