Last week's "Sudsy 16" of readers choosing among their favorite Oregon breweries had a few frothy upsets. The single remaining 1-seed, Deschutes Brewery of Bend, fell in a close match with Astoria's Buoy Beer Co., which is a three-time champion of the Oregon Beer Showdown, now in its fifth iteration. Buoy, a 5-seed, moves on to face 3-seed Breakside Brewery, fresh off winning the most medals of any state brewer at this year's Great American Beer Festival. Click on the image above to pick your…