Shorter matches allow doubles stars to prolong their careers and encourage more top singles players to dabble in doubles.

The expansion of no-ad scoring and super tiebreakers is just one way tennis is trying to speed up matches.

This week, the Open is using shot clocks in junior matches, which count down the allotted 20 seconds between points. Roger Federer and Rafael Nadal are among those who have played exhibitions to promote Fast4, which features no-ad scoring, let serves in play and sets up to just four games.

But the scoring system not only shortens matches, it also alters them.

“Regular scoring can be a little bit boring for fans, so no-ad eliminates the dead points — the deuces where no one can win,” said Bruno Soares, who is in the men’s doubles quarterfinals at the Open with Jamie Murray. “Every point is super important. At 30-all, you are one shot from a double-break point.”

Nenad Zimonjic, owner of two Wimbledon doubles crowns, said he liked the “extra excitement and pressure” but would change one component of no-ad scoring: At deuce, the receiving team gets to choose the side on which the deciding point begins.

“That is too much of an advantage and leads to quick breaks,” Zimonjic said. “They should let the server decide.”

Soares said servers were so dominant, especially on the men’s side, that “having breaks makes the game more interesting. We need more balance.”