Discussing Serena Williams' legacy ahead of the US Open 🎾 | #Greeny Mike Greenberg weighs in on Serena Williams' before she competes in what could be her final US Open. #ESPN ✔️Subscribe to ESPN+ http://espnplus.com/youtube ✔️ Get the ESPN App: http://www.espn.com/espn/apps/espn ✔️Subscribe to ESPN on YouTube: http://es.pn/SUBSCRIBEtoYOUTUBE ✔️ Subscribe to NBA on ESPN on … [Read more...]