The first scenario would be a 9-8 round. You would score the round first- in this case, 10-8 because of the knockdown- then deduct a point from the score of the guy that was penalized.
The second case is more iffy, really up to the discretion of the judges. There was some controversy over a round like this in the first Holyfield v Moorer fight, the 2nd round I believe. I've seen it go 10-10, or 10-9 for the guy scoring the knockdown, but never 9-9.
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