Gritty Woods sets out to seal the deal

Tiger Woods carved out a four-stroke lead over the field at the US PGA Championship last night and committed himself to another two rounds of grinding golf.

The world number-one put himself in pole position in Minnesota with a second-round, two-under-par 70 at Hazeltine National to extend his lead from one shot to four with Padraig Harrington, Ross Fisher, Lucas Glover, Brendan Jones and Vijay Singh locked in a five-way tie for second place at the halfway stage of the final major of the year.