Olympic champion Zheng Qinwen became the second big casualty at Wimbledon on Tuesday as the Chinese fifth seed was beaten 7-5 4-6 6-1 in the first round by Czech Katerina Siniakova.

Zheng Qinwen’s Wimbledon challenge came to an abrupt end as the Chinese Olympic champion slumped to a shock defeat against world No 81 Katerina Siniakova on Tuesday. Zheng exited in the first round for a third straight year, losing 7-5, 4-6, 6-1 to the unheralded Czech in two hours and 25 minutes in searing heat on Court Three.

Zheng Qinwen became the second top-five seed to lose in the first round at Wimbledon when the Olympic gold medalist fell to Katerina Siniakova 7-5, 4-6, 6-1.