AVP 2016 San Francisco. John Mayer / Stafford Slick Vs. Avery Drost / Billy Kolinske.AVP 2016 San Francisco. John Mayer / Stafford Slick Vs. Avery Drost / Billy Kolinske.AVP 2016 San Francisco. John Mayer / Stafford Slick Vs. Avery Drost / Billy Kolinske.AVP 2016 San Francisco. John Mayer / Stafford Slick Vs. Avery Drost / Billy Kolinske.