British number one Katie Boulter says it was a "shock to the system" to see a protestor run on to court during her win in the Wimbledon first round.
Boulter was trailing 4-2 to Australia's Daria Saville in a first-set tie-break when the man came on to court 18.
When the pair returned, Boulter took five straight points in the breaker and went on to win 7-6 (7-4) 6-2.
Fellow Britons Jodie Burrage, Arthur Fery, Heather Watson, George Loffhagen and Sonay Kartal all lost on Wednesday.
Boulter, who won a maiden WTA title at Nottingham last month, started with a confident victory against 231th-ranked Saville, who is continuing her comeback from a serious knee injury.