Tbh I actually came up with 26 after seeing the other 4 draws and estimating 3 for the mixed ( 12 men's doubles ). But just went for 24 here when I saw that that was more than any other predictions.
We were getting 16-18 wins in Rome and Madrid with no mixed draws and smaller singles/doubles draws, so it's very possible that our final total will be in the 20s. Perhaps our players are enjoying clay!