I agree Nat about the blasties, particularly if they are higher grade.

Actually, I read a study the other day where they radiated bovine sperm to damage the DNA, and then used it to fertilise bovine eggs. The eggs fertilised OK and there were the initial couple of cleavages, but further progress halted and out of many embies, only 2 made it to blastocyst. There was also a control group using normal sperm and more blasties were yielded from that group. So whilst it is possible - based on that study - to produce blasties from damaged sperm, the vast majority didn't make it that far.