Rafael Nadal: Knee pain meant I had to retire in semifinal Unknown 00:11 After retiring through injury at the U.S. Open, Rafael Nadal said he was simply in "too much pain" to continue his semifinal. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsInaugural Delhi Golf Club League set to be played from 14 to 31 OctoberAustralia Women vs India Women pink-ball Test, LIVE cricket Score: Play yet to start after tea due to bad weatherJoe Burrow vs. Trevor Lawrence: Inside the NFL rematch of 2019 CFP national championship'Stop Tagging Me': India Goalkeeper Clarifies He is Amrinder Singh Not Amarinder SinghQatar to Hold its First-ever Formula One Grand Prix in NovemberRanveer Singh Named India's NBA Brand Ambassador, to Post BTS Content from All-Star Game