Serena Williams, Jelena Jankovic exchange words -- again -- in Dubai

Jelena Jankovic (left) and Serena Williams talk after their quarterfinal match in Dubai. (Ali Haider/EPA) Serena Williams and Jelena Jankovic just can't stop

Jelena Jankovic (left) and Serena Williams talk after their quarterfinal match in Dubai. (Ali Haider/EPA)

Serena Williams and Jelena Jankovic just can't stop talking to each other during matches. The two got into it again during the quarterfinals of the Dubai Championships on Thursday, and once again it centered on Williams holding up Jankovic on her serve.

Jankovic prepared to serve at deuce at 2-5 in the second set when Williams held her up to cough. Jankovic took exception and backed off the line.

"You can take more time, it's yours," Jankovic yelled, with a hint of sarcasm.

"Do you want to do this again, Jelena?" Williams shouted back, apparently referring to two identical incidents from the Family Circle Cup last year and the 2010 Italian Open.

Jankovic complained to the umpire and the match continued, with Williams securing the break to close out a 6-2, 6-2 victory. The two had an extended conversation at the net after the handshake, but the on-court microphones didn't pick up what was said.

Here's video of the incident:

http://youtu.be/rZCOCPbIPKc

Both players downplayed the dust-up after match. Jankovic said she was more annoyed with the umpire's warnings about her speed of play.

Here's how The Associated Press reporter on site described the incident:

The only drama in the 76-minute match came in the final game with Jankovic serving.

The umpire, Kader Nouni of France, told Jankovic she was serving too fast and then too slow, when taking more than the 25 seconds allotted.

Williams was briefly brought into the fray when Jankovic made note that Williams often took more than the 25 seconds allowed to serve.

After the match, the players conversed at the net and both reported they left the court on good terms.

''I told her at the end, `Look, I didn't mean anything. I'm sorry if I played slow,''' Williams said. ''She was like, `No, it was more like they say (I) play too fast and then too slow.' She said she couldn't get it right.

''I was like, `Look, are we cool because I'm cool with you?'''

Williams will face Alize Cornet in the semifinals. Serena's sister Venus will meet Caroline Wozniacki in the other semifinal.

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