Look who's officially back in the Top-10! @delpotrojuan begins the week at #10 in the #ATP rankings, looking to build on the end of the last year into a strong 2018! Send him a 🇦🇷 if you're Team Delpo! (@cincytennis) #USOpenSeries #tennis #sports #delpo #juanmartindelpotro #instatennis #westernandsouthernopen #instaargentina #usopen