The first time eligible that went to arbitration as closers (Frieri and Cishek) both got $3.8M. No holds guy has ever got higher than $1.6M. That difference probably equals $8M+ over the rest of the years of arbitration. Osuna goes to arbitration after this season. Lets say he remains a closer throughout. It should look a little like
$3.8, $6.8, $9.8, $12
in comparison one year not closing
$1.6, $4.2, $8, $11
it's not hard or fast rules but with the inefficiencies of the system this is the kind of savings.