Rally for Roger: Some of #tennis' biggest icons salute @rogerfederer on his ever-increasing Grand Slam record, which now stands at a whopping 18 titles. From Andre @agassi to #StefanEdberg and more, see as everyone comes together to congratulate the Swiss Maestro. 📽: @atpworldtour #USOpen _ #GOAT #Sports #Winner #Federer #RogerFederer