The only hard series that the Spurs are facing is the round one, but it seems they can take care of the Nuggets.
If they will pass through the 2nd round, they will be facing either the Blazers or the OKC, I believe they have a good chance, though I think they will be again underdog.
Man, don't take the other team easily. As the playoffs goes, those underrated are hungrier than those on top. So I guess your Spurs should take their enemy seriously and be more hungrier for the title in order to win the series.