What Phrases Could Be Used.....

[sunny-dave]

... whilst playing tennis and also be used while having sex ...

"New Balls Please"

[mallyh]

that was a terrific service

[sunny-dave]

"Have you noticed that he always bounces a ball three times before each service?"

[Ellipsis]

Time.

[sunny-dave]

Oh I SAY ...

[Patsy33]

"Out!"

[Ken4155]

She's making one hell of a racket

[Ken4155]

Looks like she's enjoying that banana

[snags]

A well placed lob that fingered the base line.

[Ken4155]

A marvellous display. And to think she came here unseeded.

[Garaman]

Turns out one's very experienced meaning it's not as tight as I hoped it would be.

[MichaelZZ]

I usually throw up over my left shoulder.

[MichaelZZ]

"Oh, would you believe it? That's another seed out."

[Ellipsis]

After a very sweaty yet ultimately disappointing game of mixed doubles, he went off to work hard on his forehand.

[marval]

That was a deuce good time, but with my equipment I have the advantage.

[Patsy33]

"First come, first serve"

[marval]

Wrong hole again, that is a double fault.