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SAN FRANCISCO, California (Reuters) - Masters champion Jordan Spieth has warned rivals of an energy boost while defending champion Jason Day has advised he will continue to be relentless at this week's WGC-Match Play Championship.
The pair, along with world number one Rory McIlroy, headline the youth brigade who have taken over the sport and expect to prevail as 64 of the world's best golfers prepare for the lucrative event at TPC Harding Park starting on Wednesday.