NCAA tournament preview: No. 2 seed Michigan State highlights Toledo regional

It's hard to know what to make of this regional.

Every team in it is undeniably good or even great at something, but also has a fairly glaring weakness that other top teams shouldn't struggle too much to exploit.

At the top of it, you have the No. 2 team in the country that has, on occasion, risen to No. 1 in the estimation of many college hockey observers. However, it is so dependent on two players being on their game — and, of course, they almost always are — that there's a clear path to victory.

Then there's a team that was pretty good in the first half of the season, if occasionally disappointing, but which has taken off like a shot in the second half, after adding a goalie in late January. The problem for them is that their effort, as a team, isn't always there; it certainly wasn't there