WIMBLEDON, England — At half past noon on Sunday, there was a scene at the All England Club’s Aorangi Park usually seen once every blue moon: four left-handers hitting on three adjacent practice courts.

On Court 16, the Frenchman Michael Llodra was grooving his serve. On the court next to him, Bob Bryan and his right-handed twin and doubles partner, Mike, were in the middle of a mock match. On the other side of the walkway, on Court 3, the Spaniards Rafael Nadal and Feliciano López exchanged ground strokes and banter.

An estimated 10 percent of the world’s population is left-handed, but in the men’s and women’s singles at Wimbledon, five of the 32 remaining players, or 16 percent, are. According to the tournament’s Web site, in 125 years 10 left-handers — eight men and two women — have won a total of 26 singles titles.

Unlike, say, banks, with their debit-card swipe machines that force people to insert the card on the right and then sign for cash with pens dangling from chains on the right-hand side, the grass surface can really pay dividends for left-handers, whose ball flight, spin and bounce run counter to what right-handers are used to seeing.