纳豆对小德还是16：14领先呢，你能说纳豆对小德的赢面大吗？我发现你很书呆子气。
winning % on 2nd serve 63% : 45% exactly means that Nadal needs to improve his serve, especially first server percentage because 45% means that Nadal will most likely lose the point if he misses his first serve, due to the fact that Novak is the best returner ever in the game!
