Calcavecchia's first Champions Tour victory came at this event a year ago and he has since captured another title in Montreal.
He played the first eight holes of the TPC-Snoqualmie Ridge course in 5-under, and then birdied four out of six holes on the back nine. He suffered two bogeys, one of them coming on the par-5 18th hole.
Willie Wood, coming off his first Champions Tour win at the Dick's Sporting Goods Open, was among those who shot 69.
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