This mid-summer tournament has been a fixture in Prescott for nearly 30 years, and offers a low-key, relaxing time and a unique tennis experience playing on the campus of Yavapai College.The Prescott Mile High Senior Open holds a Southwest Level 2 designation, making it one of the higher point-producing events for a Southwest ranking each year. Best of all, the tournament is also the annual fundraiser for the Prescott Area Tennis Association's tennis activities in the community (including summer tennis…