You want to know when He Bingjiao is tiring and will soon be overcome by fatigue? Just watch for the following signs , any one or all of them: 1) she is gasping for air , mouth open most of the time, almost agape; 2) she struggles to cover the long diagonal even when she saw the return shot coming back; 3) she stops smashing hard or it's getting few and far between. I mean, for most fit players, the above indications arise only when the rally is long and punishing, not to say when the match is grueling; for her it happens after a few short runs on court, and she doesn't recover from it after that. Just compare TTY with HBJ in G2 today on TV when there are close-ups, it's that obvious. Talking about the point no. 3, she does possess a powerful smash, probably the hardest hitter in WS, only Saina Nehwal can compare with her, not Carolina Marin or anyone else. Porntip or Yip Pui Yin maybe but I'm more interested in the top ranks. Frankly, I won't ever hope to see HBJ with six-pack abs like TTY, as long as she doesn't develop a paunch we should be thankful already, just flat abs and better stamina will do, enough to make me smile.