mathematical reason why China always win Uber Cup by 4-1. here is a mathematical explanation why China always win by 4-1 instead of a dominating 5-0 in the Uber final events. as we all know that winning an individual event isn't a 100% matter. there are many factors contributing to the win and loss of a match. if we are allowed, let's peg a probability to China winning a match. say that's P(win). a Uber cup team tie has 5 events. as established above, we have a simple Binomial distribution of the probably P(n/N), ie. the probability of winning n trials in N Bernoulli trials. the graph of the probabilities are as plotted in the graph. this is when P(win) = 0.84. and that's where P(4/5) ~= P(5/5). in laymen terms, the probability of winning 5 out of 5 events is the same as the probability of winning 4 out of 5 events are the same. if we increase P(win) to > 0.84, then P(5/5) is higher, if we decrease P(win) to < 0.84, then P(4/5) is higher. and to me, a probability of P(0.84) is quite high in general. that's requires a very high level of consistency as well as external factors like illness and injury. and more importantly, their opponents are no push-overs either, as we can see, Korea (the previous finalists) are quite strong as well. thus that explains why China always lose one match out of 5 possible. and why LiYongBo always emphasize consistency. for the ppl who do not understand the above mathematical explanation, it is ok, it is not any mathematical breakthrough but just some small insight. basically it means that to win 5/5 is quite hard.