Mickelson can reach No. 1 for the first time in his career by winning at Pebble Beach. But there are more scenarios in Mickelson's favor.
He would go to No. 1 by finishing runner-up as long as Woods finishes out of the top four. Mickelson could finish third at the U.S. Open and go to No. 1 if Woods were to finish out of the top 18.
If Woods misses the cut, Mickelson would need no worse than a two-way tie for third.
Woods has been No. 1 for the last five years.
Copyright 2010 by The Associated Press
MORE GOLF HEADLINES
- Reed, 23, makes history with win at Doral
- Tiger tweaks back, fades with birdie-less 78
- Rookie Hadley closes out Puerto Rico victory
- No. 1 Park edges No. 2 Pettersen in China
MOST SENT STORIES ON ESPN.COM
2010 U.S. OPEN
At a U.S. Open that will likely always be defined by failure, Graeme McDowell turned what was a final-day fiasco for just about everyone else into the highlight of a lifetime. Bob Harig | Championship Central2010 champion: Graeme McDowell
Course: Pebble Beach Golf Links
Where: Pebble Beach, Calif.
Yardage, par: 7,040 yards, par-71