British number three Heather Watson claimed her first Wimbledon singles win with a 6-2 6-1 victory over Czech Republic's Iveta Benesova.
The 20-year-old became the first woman since Jo Durie in 1985 to win a match on Centre Court by toppling the world number 55 in straight sets.
Compatriot Johanna Konta will resume her match with American Christina McHale at 7-7 in the final set on Tuesday after their contest was suspended as darkness fell.
British debutant Oliver Golding, an 18-year-old wildcard, lost 1-6 7-6 (7-4) 7-6 (9-7) 7-5 to Igor Andreev of Russia, a player ranked 398 above him in the rankings.
However, Josh Goodall succumbed 6-4 3-6 7-6 (7-3) 6-4 in a first-round loss to Grega Zemlja, the fifth time he has failed to win a game as a Wimbledon wildcard.
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