Tanner Scott just blew his MLB-leading fifth save with the Dodgers yesterday, instantly turning a 4-2 lead in the eighth inning into a tie game that grew into a 7-4 defeat. Scott, a much-ballyhooed free agent pickup this offseason, has a 3.28 ERA, which is in line with his career ERA (3.55). And he has 10 saves this year.
Many Dodger fans have been frustrated by Scott, but he still boasts a 0.2 WAR this year. And positive WAR is better than nothing.
An interesting comparison case is Devin Williams, who was the Yankees' big relief pitcher pickup this offseason.