The top seed was unexpectedly eliminated in the first round.
Tips
memory
种子 literally means 'seed' — the same metaphor as English 'seeded player'. In tennis, a 1号种子 (yīhào zhǒngzi) is the top seed; 非种子选手 (fēi zhǒngzi xuǎnshǒu) is an unseeded player who often plays the spoiler.