What’s the ultimate Open Era mashup? We asked (in order of appearance) @madisonkeys, @andymurray, @carowozniacki, @angie.kerber, @delpotrojuan, @rafaelnadal & @alexzverev123 to tell us their past and present dream matchups. #USOpen __ #tennis #sportstalk #madisonkeys #andymurray #carolinewozniacki #juanmartindelpotro #rafaelnadal #zverev #kerber