The Romanian tennis player Victor Hanescu stormed out of his Wimbledon third-round match after appearing to spit at the crowd in chaotic scenes.
Four fans were also arrested in an unrelated incident on Day Five of the tournament.
Hanescu, seeded 31, was trailing Daniel Brands 3-love in the fifth and final set when he walked up to umpire Kim Craven and retired after being involved in an altercation with fans who were cheering loudly for his German opponent on Court 18.
Police also said four youths were arrested from the same court, site of the marathon 11-hour match between John Isner and Nicolas Mahut earlier in the week, but added the two incidents were unrelated.
Under grand slam rules, Hanescu faces a fine of up to 15 thousand dollars for unsportsmanlike conduct for the incident although Wimbledon officials said they'll take their time to gather evidence since the Romanian is no longer in the tournament.
Officially Hanescu retired from the match due to a leg injury.
Last November, women's world number one Serena Williams was fined a record $175,000 and put on probation for two years for her foul-mouthed tirade at a lineswoman at the 2009 U.S. Open.