Sentence:  When Furyk spots another Arizona alum on Tour, one of them will utter the official U of A exhortation, which dates to the 1920s, when on his deathbed the school's quarter-back urged the football team to "<WSD>bear down</WSD>." Few on Tour <WSD>bear down</WSD> like Furyk. He has his plan and sticks to it. 
Meaning of the word marked with <WSD> tags:  To intensify one's efforts.