No. Just the first rack. And yes, if you did this your run would be legitimate.Get yourself a 5 gallon bucket and just throw the balls on the table each rack
Your high run is counted from the time you made your first legal ball until you make your last legal ball. Anything before or after that has no bearing on it. The fact that Jayson started his run of legal shots in the middle of a rack doesn't negate the fact that from that point he potted 669 balls legally in a row.