I'm interested in this because it's revealing to see which first half factors are best predictive of second half results.
In the past, expected win % has been more predictive than record in 2+-run games, which was surprising to me. I thought all the blow-outs in WIS would mean expected win % wasn't that relevant. But we'll see what happens this year.
Both of these have been, by a distance, more predictive than straight win-loss record - because wins are really fluky even over 1/2 a season.