The Buick Invitational is underway. Strongest field so far in 2007: Tiger is back. Phil is back. Kelly is back . Also, the Torrey Pines South Course will host the US Open this year, so this one is well worth watching. This tournament is played on both the north course and south course however, and the current leaderboard may not be a good reflection of the 'true standings' because of it.

Here is the leaderboard after day 1:

1 Troy Matteson (USA) -7 F
2 Brad Adamonis (USA) -6 F
T3 Stuart Appleby (AUS) -5 F
T3 Rory Sabbatini (RSA) -5 F
T3 Tiger Woods (USA) -5 F
T3 Kevin Streelman (USA) -5 F
T7 Stewart Cink (USA) -4 F
T7 Doug LaBelle II (USA) -4F
T7 Anthony Kim (USA)- 4 F
T7 Nathan Green -4F