Day 1 in the books

Day One of the eighth Presidents Cup is in the books and the American team is clinging to a 3.5-2.5 lead going into tomorrow's eight matches.
So what do we know after the first six matches? For one, it wasn't that great of a day for three of the four Captain's picks.
While Adam Scott was part of one of the International's winning matches, Ryo Ishikawa was one-half of the team that suffered the worst loss of the day, while Captain Fred Couples' two picks not only were part of the two losing teams for the Anericans, Lucas Glover cost the U.S. team at least 1/2 of a point with a blown putt late in his match that helped the International team escape with a full point.
Second, Hunter Mahan - the other Couples' pick along with Glover - and Sean O'Hair should have been able to beat Scott and Ernie Els and their 2 & 1 loss in the match wasn't even that close. These two are clearly the weak link for the U.S. team and it will be interesting to see if Couples sits either or both of them in Friday's matches.
We also know that Tiger Woods' struggles in Ryder Cup haven't carried over to this event as he and Steve Stricker rolled to an easy 6 & 4 win over Ishikawa and Geoff Ogilvy.
And we know that Phil Mickelson and Anthony Kim make up a really good team that Couples should continue to pair up as the weekend unfolds.
But as far as whether or not the U.S. will improve to 6-1-1 in Presidents Cup play remains to be seen. There are still 26 points up for grabs over the next three days and after the opening day it is clear that it is still anyone's Cup to win.