Dustin Johnson signed this ball from the Accenture Match Play tournament held in Marana. 

Golfer Dustin Johnson has picked up 15 PGA tour wins in his 10 year career, including the 2016 U.S. Open, the same year he picked up Player of the Year honors. He also finished 4th in the 2016 Masters Tournament.

No certificate of authenticity is available for this item, but this fan favorite certainly signed a lot of balls at Accenture just north of Tucson.