I doubt the Twins call up Kiriloff to replace an injured Cave, unless Cave was playing every day. If that was the case, Kiriloff would then play every day.
They're not going to put Kiriloff on the bench for any length of time. He's more valuable to the organization then Cave, and they dont need metrics to make that call.
A better question...would they call up Kiriloff if it was Rosario going on the IL?
As String pointed out in his response to my hypothetical scenario, there are many different things to consider when it comes to a decision like adding Kiriloff to the roster. String astutely lists the majority if not all of the major considerations.
"40-man status, service time, contract, options all fit in somewhere and it complicates decisions for promotion and demotion".
Kiriloff would have to out distance those on the 40 man roster to justify a call up because of all the considerations that String listed.
However... if he did out distance the rest and was stroking the ball as my hypothetical scenario presents.
Shouldn't Kiriloff getting called up be the way that it works?
Your response "They're not going to put Kiriloff on the bench for any length of time".
And you finish with "A better question...would they call up Kiriloff if it was Rosario going on the IL?"
The only thing I can conclude (you've expressed similar before)) from these two statements that I've taken specifically out of a longer body of thought is this:
You will protect the starters and eliminate any competition to every inch of their playing time.
If Cave "The Backup" is hurt. You would call up a player like Wade who can fill in that backup spot, not play much and not disturb the starters that were designated prior.
If Rosario "The Starter" is hurt. You would then consider a Kiriloff call up to leap frog past Jake Cave for all of the playing time.
So, your assessment of Kiriloff is currently better than Cave but currently worse than Rosario.
Yet the gap between Rosario and Cave is statistically marginally thin with only 2000 plus AB's and potentially 15 million dollars and 3 years of service time separating them significantly.
This is exactly what baseball has done for many decades. I'm praying it stops.