Citi Open Embraces Doubles, by Singles Players

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WASHINGTON — After Mark Ein bought the Citi Open, he said he would make a point of highlighting doubles play.

And sure enough, on Wednesday, in one of the four matches scheduled on the main stadium, the former No. 1 singles player Andy Murray continued his comeback from hip surgery by playing doubles alongside his brother, Jamie, against Nicolas Mahut and Édouard Roger-Vasselin, a rare appearance on a big stage for a first-round doubles match.

But on the tournament’s smallest competition court, the only one that lacks television cameras and Hawkeye review technology, there were four top-20 doubles players — Mate Pavic, Bruno Soares, Jean-Julien Rojer and Horia Tecau.…