International Pro Championship of Britain

The International Pro Championship of Britain (also known as the Southport Dunlop Cup for sponsorship purposes) was a professional men's tennis tournament held at Victoria Park in Southport, England between 1935 and 1939. It was open to professional players only, amateurs were not allowed to compete. The tournament was held on outdoor En-tout-cas, "all-weather" artificial clay and was played in July, except for the 1939 edition, which was held in August. Hans Nüsslein won four consecutive titles from 1936 through 1939.