When I began tracking what I call “MRUs”, it was because I saw something inherently wrong with RBIs, and just for the reasons you’ve noted. Also, when one thinks about it, the major reason the #4 hitter in a lineup gets so many RBIs, is because of the players immediately ahead of him, not necessarily his batting prowess. In today’s game, its pretty unusual to see a Babe Ruth or Mickey Mantle batting 4th, with a .340+ BA or even anything like it at the ML level, let alone the lower levels. So to me, an RBI isn’t really indicative of a batter’s skill, as much as where he’s placed in the lineup. That’s one reason why I like MRUs so much. When I look at them, nothing concerns me other than did he do his job, with his job being defined as moving any lead runner closer to scoring.
But that doesn’t do much to resolve the issue of trying to measure a batter’s success at getting RBIs, which are viewed by most as “DRIVING IN RUNS”, which they really aren’t. An RBI represents only being the final reason a run scores, defined by strict criteria. Meanwhile the guy who gets on and is then replaced by a pinch runner gets absolutely no credit, nor does the guy who moves him over with a bunt, or to 3rd with a grounder or a fly. But that next guy who hits a swinging bunt that can’t be played gets an RBI and is looked up to as the “hero”.
BAWRISP drives me nuts for the same reason. It’s as though it’s a skill that can be practiced aside from just batting. But again, I digress.

Getting back to the question at hand, just to get an idea, let’s say this factor needs to be based on how close a runner is to scoring. IOW, a runner on 3rd is the easiest runner to drive in, and a batter the hardest. So maybe Total Bases measured a slightly different way could be somehow used. And of course the number of outs affect things as well, so we might not want to forget them.
FI, runner on 3rd and no outs should be the easiest RBI, and 2 outs and no one on should be the most difficult. But here’s where my problems with RBIs vs MRUs come into great conflict. As a fan and a player, I really don’t give a darn whether or not the batter gets credit for an RBI if a run scores because of something he did in his PA. I’m just happy to see the run. However, ruminating does give me an idea.
Its not the RBI but the situation that has to be valued. IOW, when a batter comes up, the likelihood he’s going to get an RBI needs to be computed prior to his at bat being over.
Let’s assign an RBI value to the AB of 4 if the run he gets credit for an RBI is him, 3 if it’s a runner on 1st, 2 a runner on 2nd, and 1 a runner on 3rd. Then how about we multiply that by something representing the number of outs, say a 1 for no outs and a 2 for 1 out and a 3 for two outs. Let’s test that.
Runner on 2nd with 1 out at the time the batter comes to the plate. He does something to drive that run in and be credited with an RBI, so the calculation becomes, 2*2, and that’s what he’s credited with for the AB.
Now let’s say it’s the same situation but the batter hits a HR. now its 2*2 for the 1st RBI, but also 4*2 for himself, for a total of 12 for the AB. And if there were 2 outs instead of 1, it would be (2*3)+(4*3) for 18 points, or if there were no outs, (2*1)+(4*1), or 6 points total.
The factors are likely much more “harsh” than a REAL Sabermatician would use, but without any history about what’s taken place, there’s really little choice. I suppose cutting each of them in half would be a better approximation of their true worth, but in any case, I’d say we have the basis of a plan.
Now here’s a fly in the ointment, at least for me. I don’t store each PA separately. I store an aggregate of what each player has done for a game. FI, if the entire lineup bats 4 times in a game, that’s 36 PAs and would be 36 individual records. While the game is underway, that’s what I have, but when I store that information, there would only be 9 records, 1 for each player.
What I’d have to do is compute that RBI# before I put all the records together. Its doable, but it is a real technical problem.
So am I on the right track?
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