Kei got an abdominal muscle strain during the first round of Nottingham last week, and unfortunately it looks like it flared up again today.
He got treatment on his abdomen with spray, taping and some tablets after taking the first set. Till then he was playing very well, and he managed to keep the score close in the second set as well. But probably the pain became unbearable after the second set. He quit during the first game of the third set.
Poor kid looked dejected after the loss, burying his face in a towel.
I think it's inevitable that some teenage pros tend to retire more often than not, they're not used to playing week in, week out, at a much higher level than challengers and futures. Better to take care of themselves when injured than making it worse by playing on to get some permanent damage before their career really takes off.
Have a good rest, Kei, get better soon and play fit in New Port!