In cricket, roundarm bowling is a style that was introduced in the first quarter of the 19th century and had largely superseded underarm bowling by the 1830s. Using a roundarm action, the bowler has his arm extended at about 90 degrees from his body at the point where he releases the ball. Roundarm fell into decline after 1864 when the current style of overarm bowling was legalised, although W. G. Grace continued to use it to the end of his career.
The spread of roundarm in the 1820s was a natural reaction to the growing predominance of batsmen over the age-old underarm style of bowling. Its adherents argued that the legalisation of roundarm was essential to restore the balance between batting and bowling. However, high-scoring matches were still comparatively rare owing to vagaries in pitch conditions.
The idea of roundarm is traditionally attributed to Christiana Willes, sister of Kent cricketer John Willes. The story goes that when bowling to her brother in the garden at home in the 1800s, Miss Willes found herself inconvenienced by her large, lead-weighted dress which prevented her from performing the underarm action. Elevating the arm to just above waist height, she was able to deliver the ball without interference from her attire. According to John Major in More Than A Game, the story is unlikely to be true for reasons of fashion more than cricket because hooped skirts were out of fashion during the period of the Napoleonic War.