After losing his opening match at the U. S. championships in 1910, Caner reached the last 16 in 1911.

In 1920, Caner reached the semifinals, where he took a set off defending champion Bill Johnston.

[4] The correspondent in The Brooklyn Daily Eagle commented that it was "astonishing that a player of Caner's ability has been able to reach the semi-finals of the national championship", concluding that the reason for this had been a "soft" draw.

He went to Harvard (where he excelled at tennis and was intercollegiate singles champion) and later during World war 1 enlisted in the Ambulance Corps.

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