On this day in 1998: @marceloriosoficial officially takes the reign at the 🔝 of the ATP rankings, making him the first Latin American player to hold the distinction of World No. 1! Have a look back at some great Ríos moments throughout the years at the #USOpen. _ #tennis #instatennis #marcelorios #chinorios #chile #instasport #atp #atpworldtour #cnnchile #chileno #grandslam