Zacks Bull and Bear of the Day Highlights: Dynegy, Palm, Inc., Arthrocare, Daimler AG and Vodafone

AUGUSTA, Ga. [bar] Tiger Woods, contrary to popular perception, is not unbeatable on a golf course. He is not indomitable even at Augusta National Golf Club, where he has won four times in 13 appearances and where he is the even-money favorite to win the 72nd Masters, which begins today. As Woods has taken pains to point out many times, golfers lose far more often than they win. Despite his well-documented belief that he can win every time he tees it up, Woods has 64 victories in 234 tournaments over 12-plus seasons on the PGA Tour. At the same point in his career, Jack Nicklaus' total was 40 in 234 .