The popularity of the game in the United States and frequent doubts about the rules led to the foundation in 1881 of the U.S. National Lawn Tennis Association, later renamed the U.S. Lawn Tennis Association and, in 1975, the U.S. Tennis Association USTAA).
In spite of frequent doubts on ethical grounds regarding bereavement studies, many of the published data assessing questionnaire impact on participants has indicated a positive effect on the participants.
Rand Paul's interview style suggests he has frequent self-doubts about the acceptability of his message.
In the spirit of fostering a little more humility in our private thinking and our public discourse, it might be worth remembering that some of those we admire the most have also been humble and engaged in frequent self-doubt.
But like DeWitt, she has begun receiving frequent messages from doubting pastors and churchgoers, seeking her help in making the leap away from God. "It's all new friends now," she said.
Mr. Vongerichten's frequent flier account no doubt puts each of theirs to shame.
His sublime talent at the wheel was never in doubt, but frequent mechanical mishaps and the occasional accident were to deny him the winner's laurel wreath in a championship race, giving him the unwanted sobriquet of the most talented driver never to win a grand prix, as well as the record for driving for the highest number of teams in the history of the championship.
But his career is still marked by frequent periods of self-doubt.
We will no doubt discuss his frequent use of drone warfare, as well as his decision not to send thousands of troops to invade Syria even as he got the Syrian government to declare and give up its chemical weapons stash and why he never succeeded in closing the infamous prison at Guantánamo Bay.
White's biographer Richard Mabey casts doubt on the "frequent assumption" that White's "deepest regret was that he could never be vicar of Selborne", but it was true that he was ineligible, as only fellows of Magdalen could be granted the living.
