"I wonder how Kosar did in the NFL?"
That's not the question we should be asking, statistically speaking it's known as 'survivorship bias', ie that because Kosar had good stats (but no SB ring) all side-arm QB's with poor deliveries do well. The question we should ask is of all drafted QB's with bad deliveries, how many succeeded in the NFL? I don't know the answer, but I'm guessing not many
That's not the question we should be asking, statistically speaking it's known as 'survivorship bias', ie that because Kosar had good stats (but no SB ring) all side-arm QB's with poor deliveries do well. The question we should ask is of all drafted QB's with bad deliveries, how many succeeded in the NFL? I don't know the answer, but I'm guessing not many