For the second article in our Deep Dive series, we're using returning individual 400 times to project some of the best 4x4 squads this spring. This method isn't perfect - it misses athletes that didn't run the open 400 but still ran on the relay - but it has a decent track record of pointing out teams that have top 10 potential by the end of the spring. On the following slides we have predictions and actual rankings for 2018 and 2019, for both boys and girls, so you can see how the process works. We follow that with predictions for 2020 using the same method. A good portion of the teams in that projection will end up in the top 15 by season's end.