Oklahoma City is out of the first round, but most of the league is still trying to get out of the opening series. On Monday night, the Thunder became the first team to punch their ticket to the second round of the playoffs. Finishing off their third straight first-round sweep, the Thunder have again established their dominance early in the postseason. While a few teams have had an opportunity to end their series in the days since, the Thunder have been joined by only the San Antonio Spurs in the second round. While it’s unsurprising that the league’s top two teams became the first to advance, it is a bit surprising that the Thunder have seen only one team join them as first-round winners over the past two days. Over the next couple of days, there will be six Game 6s across the league, with plenty of potential for multiple Game 7s this weekend. Considering how unpredictable the postseason has been for most teams thus far, it says something that the Thunder managed to be just as predictable as expected.…