奧運會等大型賽事中，我們總能聽到有些選手被稱為“種子選手”，而且前面還帶編號的。至於為什麼他們被選定為“種子選手”，這個選擇標準是什麼，可能很多人都不太了解。我們今天就一起來探討一下吧。

　　Men's Singles First Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 07/08/2016. Novak Djokovic (SRB) of Serbia reacts after losing his match against Juan Martin Del Potro (ARG) of Argentina. [Photo/Agencies]

　　先看一則奧運報道：

　　Top seed Novak Djokovic was beaten in the first round of the Olympic men's singles by Juan Martin del Potro.

　　奧運會網球男子單打第一輪比賽中，頭號種子德約科維奇負於（阿根廷選手）德爾·波特羅。

　　The world number one, 29, was in tears as he left the court after the match, which lasted two and a half hours.

　　現年29歲的“小德”世界排名第一，兩人之間的角逐持續(xù)了兩個半小時，離場時，小德哭了。

　　"This is one of the toughest losses in my career," said Djokovic, who was trying to win his first Olympic title.

　　他説：“這是我職業(yè)生涯中最慘痛的一次失利?！边@是他第一次向奧運金牌發(fā)起衝擊。