Zach Johnson, the 2007 Masters champion, carded a 68 to lie six strokes off the pace with fellow Americans Boo Weekley (71) and Scott Verplank (68).
Spanish world No. 4 Sergio Garcia, the highest-ranked player in the field, was among the late starters after opening with a 67.
The cut was projected to fall at three-under 137 with Britain’s Justin Rose and Swede Daniel Chopra among those in danger of making early exits.



