no. 2 the only pro is not to face no.1 until final in any event. Might not be very helpful if top 4 are close in terms of level, like Sampras/Agassi/Courier/Chang, unlike Fed/Nadal >>>>> than the rest no. 3 usually people mention top 3 as final prize in many other event - gold/silver/bornze, just not tennis, other than that, no advantage no.4 like no.2, being no.4 makethe seeding cut off in big event. As above, it might not be very helpful if top 8 are very close in term of level, though not as likely as the top 4 no 5. just half of the top 10, but being no 5 sound like a lot higher than no 6 youre thoughts?