Phil Michelson watches his shot during the second round of the Northern Trust Open at the Riviera Country Club on at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Phil Michelson exchanges clubs with his caddie during the second round of Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Phil Michelson studies a putt during the second round of Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Phil Michelson hits a shot from a greenside bunker during the second round of the Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Jason Day takes a drop during the second round of the Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Fred Couples hits a shot from the rough during the second round of the Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Fred Couples hits a shot from the ninth fairway during the second round of the Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Phil Michelson hits a shot from the rough during the second round of the Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Anthony Kim watches his tee shot during the second round of the Northern Trust Open at the Riviera Country Club on at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Rickie Fowler hits his tee shot on the tenth hole during the second round of the Northern Trust Open at the Riviera Country Club on at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)
Northern Trust Open 2012
Luke Donald hits a chip shot during the second round of Northern Trust Open at the Riviera Country Club on February 17, 2012 in Pacific Palisades, California. (Photo by Mel Blackmon/CBS)