SAN FRANCISCO - OCTOBER 11: Ryo Ishikawa of the International Team stands with Kenny Perry of the USA Team during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Warren Little/Getty Images)

SAN FRANCISCO - OCTOBER 11: Ryo Ishikawa of the International Team celebrates in front of Kenny Perry of the USA Team to half the 16th hole during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 11: Captain Greg Norman of the International Team congratulates Ryo Ishikawa for his 2 and 1 win over Kenny Perry on the 17th green during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 11: Kenny Perry of the USA Team on the 2nd hole during the Day Four Singles Matches in The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 11: Kenny Perry of the USA Team on the 2nd hole during the Day Four Singles Matches in The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 11: Kenny Perry of the USA Team tees off on the 12th hole during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Warren Little/Getty Images)

SAN FRANCISCO - OCTOBER 11: Ryo Ishikawa of Japan and the International Team on the second tee in his match with Kenny Perry of the USA Team during the Day Four Singles Matches in The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 11: Ryo Ishikawa of Japan and the International Team on the second tee in his match with Kenny Perry of the USA Team during the Day Four Singles Matches in The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 11: Ryo Ishikawa of Japan and the International Team on the second tee in his match with Kenny Perry of the USA Team during the Day Four Singles Matches in The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 11: Kenny Perry of the USA Team reacts to a missed putt on the 13th green during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Warren Little/Getty Images)

SAN FRANCISCO - OCTOBER 11: Kenny Perry of the USA Team reacts to a missed putt on the 13th green during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Warren Little/Getty Images)

SAN FRANCISCO - OCTOBER 11: Ryo Ishikawa of the International Team looks on as Kenny Perry of the USA Team walks past during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Warren Little/Getty Images)

SAN FRANCISCO - OCTOBER 11: Kenny Perry of the USA Team hits a tee shot on the third hole during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 11: Ryo Ishikawa of the International Team watches the tee shot of Kenny Perry on the third hole during the Day Four Singles Matches of The Presidents Cup at Harding Park Golf Course on October 11, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 10: Y.E. Yang, (L) and Ryo Ishikawa of the International Team celebrate their 3&2 victory on the 16th green as Kenny Perry of the USA Team looks on during the Day Three Morning Foursome Matches of The Presidents Cup at Harding Park Golf Course on October 10, 2009 in San Francisco, California. (Photo by Scott Halleran/Getty Images)

SAN FRANCISCO - OCTOBER 10: Y.E. Yang of the International Team pitches to the 15th green as Kenny Perry and Zach Johnson and their caddies look on during the Day Three Morning Foursome Matches of The Presidents Cup at Harding Park Golf Course on October 10, 2009 in San Francisco, California. (Photo by Scott Halleran/Getty Images)

SAN FRANCISCO - OCTOBER 10: Zach Johnson, (R) and Kenny Perry of the USA Team line up a putt on the second green during the Day Three Morning Foursome Matches of The Presidents Cup at Harding Park Golf Course on October 10, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 10: Zach Johnson, (L) and Kenny Perry of the USA Team watch a putt on the second green during the Day Three Morning Foursome Matches of The Presidents Cup at Harding Park Golf Course on October 10, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 10: Zach Johnson and Kenny Perry of the USA Team celebrate on the fourth green during the Day Three Morning Foursome Matches of The Presidents Cup at Harding Park Golf Course on October 10, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 10: Kenny Perry of the USA Team nearly holes a shot on the first hole during the Day Three Morning Foursome Matches of The Presidents Cup at Harding Park Golf Course on October 10, 2009 in San Francisco, California. (Photo by Harry How/Getty Images)

SAN FRANCISCO - OCTOBER 09: Y.E.Yang of South Korea and the International Team with Ryo Ishikawa of Japan against Kenny Perry and Sean O'Hair of the USA team at the 13th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Kenny Perry of the USA Team hits his tee shot at the 16th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Michael Jordan of team assistant of the USA team with Kenny Perry the at the 18th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Kenny Perry of the USA Team gets the yardage for his second shot at the 10th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Kenny Perry of the USA Team hits his tee shot at the 13th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Kenny Perry of the USA Team hits his second shot at the 10th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Kenny Perry of the USA Team hits his tee shot at the 7th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Y.E.Yang of South Korea and the International Team birdies the 14th hole in his match with Ryo Ishikawa of Japan against Kenny Perry and Sean O'Hair of the USA team during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Y.E.Yang of South Korea and the International Team with Ryo Ishikawa of Japan against Kenny Perry and Sean O'Hair of the USA team at the 7th hole during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)

SAN FRANCISCO - OCTOBER 09: Y.E.Yang of South Korea and the International Team birdies the 14th hole in his match with Ryo Ishikawa of Japan against Kenny Perry and Sean O'Hair of the USA team during the Day Two Fourball Matches in The Presidents Cup at Harding Park Golf Course on October 9, 2009 in San Francisco, California (Photo by David Cannon/Getty Images)