Photos: Caddies at the 2020 3M Open The Caddie Network Staff 4 years ago Jul 24, 2020; Blaine, Minnesota, USA; Max Homa's caddie Joe Greiner checks a scorecard during the second round of the 3M Open golf tournament at TPC Twin Cities. Mandatory Credit: David Berding-USA TODAY Sports Check out some of our favorite images — many with caddies — from the 2020 3M Open at TPC Twin Cities in Blaine, Minnesota.