The Roger Davies reference article from the English Wikipedia on 24-Apr-2004
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Roger Davies

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Roger Davies is a fictional charactor in the Harry Potter books. Roger is the captain, and a Chaser, for the Ravenclaw Quidditch team. Roger had the envious fortune of going to the Yule Ball with Fleur Delacour, though he was too busy staring at her to enjoy the experience.

He asked his Seeker, Cho Chang, to go out with him the following year, but she turned him down in favor of Gryffindor's former Seeker; Harry Potter. Roger and his date ended up in the same tea shop as Harry and Cho. Cho tried to use Roger's offer to her to make Harry jealous.