Serena Williams was crying on the sidelines after having to retire from the finals in the Rogers Cup tennis tournament because of back spasms.
Serena was playing 19-year-old Canadian phenom Bianca Andreescu in Toronto. Bianca is Serena's biggest fan! As Serena made the decision to retire, Bianca ran over to console her ... and shared some pretty inspiring words too.
This is what good sportsmanship is all about.