You didn't know before the start of Week 1, and here's the hard truth in fantasy football heading into Week 2: You still don't know.
It is often a mistake to look at the results from the first week of the season and come to any conclusions about teams or players. Yet that's the natural inclination in a 16-game season based on some of the results that fantasy players have seen.
It may be safe to believe that Indianapolis Colts quarterback Andrew Luck is back following his four-touchdown performance against the Detroit Lions in Week 1, but that is not necessarily the case.