After two games in all the ALDS series, the higher seeds are in trouble. Texas and Arizona have opened 2-0 leads going back to their home ballparks, while the Twins and Phillies are both 1-1 in their series against Houston and Atlanta respectively. It is entirely possible that all four lower seeds could lock up trips to the league championship series.
I am particularly surprised by Arizona and Texas. Neither team charged into the playoffs, but both seem to have found their best selves at just the right time. If all the lower seeds win their series, the Twins would have a 10-3 record against the remaining participants, having won the season series against all three other remaining teams. Of course, no one has advanced yet, so we shouldn't be counting our chickens before they're hatched.