Hard work paying dividends: A thoroughly deserving @simonahalep will finish the 2018 season as the @wta World No. 1️⃣ for the 2nd straight year! 📸: 2018 @cincytennis. _ #USOpenSeries #simonahalep #wta #wtatennis #mondaymotivation #hardworkpaysoff #instasport #tennis