A/N: In honour of Wimbledon...

Game, Set, Match!

This had been a really bad idea. Hot day, tight shirt, see through shorts... Rick was already regretting challenging his girlfriend to a tennis match at his sports club. Although he was a fairly frequent visitor to their world-class gym, he could count the times he'd been out on court in the last year on the fingers of one hand. But she'd heard that he played and hadn't let it go, and finally he'd agreed, stupidly teasing her that he might have to let her win.

Never one to let anything go, Kate had said they would turn it into a bet. The loser had to wear their tennis outfit to work on Monday. Though he wasn't completely out of shape, Rick knew he'd been fitter, and tennis whites where only flattering on the most muscular men. He'd only agreed to the bet because Kate, in bright orange booty shorts and a flappy white skirt, was enough to keep him happy for at least half an hour; all she had to do was stand and let him watch her.

"Because that's not pervy at all," she'd replied to this comment, going to the separate ladies locker room to put on the offending costume.

He'd sighed. There was something about sports bras that fascinated him; he'd never actually seen Kate put one on.

And now he was out on the freshly mown grass, adjusting his cap as Kate strutted out of the plaza. Her shorter, lighter hair, a summer style which he couldn't get enough of, was swept up in a high ponytail, and she flashed him a stunning smile from under the brim of her headband. She met him at the net.

"Still up for this?"

"Of course. In fact, why don't we raise the stakes?" Why? Why?

"What did you have in mind?"

"Winner gets to pick the band for the wedding."

"But we already agreed I get to pick-"

"You're picking everything."

"You're making me marry you."

"You want it too."

"So you say."

"Fine. You can have the band. If I win-"

"Oh just shut up and play, Castle, if you win I'll do whatever you tell me. Because you're not going to win!"

"You shouldn't be so confident. This is my club, I come here every week."

She winked. "Not to play tennis, though."

"Details, details. Really, anything?"

"Anything."

Deciding he could relish thinking of what he would make her do later, he picked up a couple of balls from the bucket at the side of the net.

"Do you want to serve first?" he asked, offering them to her.

"Keep your balls, Castle. You need them."

She moved slowly, letting his eyes follow her ass as she walked to her end of the court. She turned and leaned down, twisting her racket in her hands.

Kate knew full well Rick was looking down her top, but she was quite enjoying it. Despite the fact that their relationship was now public, she didn't get to dress up for him very much outside the bedroom. They didn't go to beaches where she could wear bikinis, they so rarely did anything where revealing outfits were appropriate. She chuckled. Perhaps the point was that she didn't want to be appropriate.

She did some admiring of her own. Rick wasn't the youngest, he didn't have a perfect body, but he had some nice arms under that white shirt, and his little white shorts really showed off his strong legs and the round curve of his ass. Since she'd said she'd marry him, he'd been working on the torso too, and it was abs, not fat, that stretched his shirt. He was a big man – but she was a tall girl, and she liked it. She didn't want to be with someone she was worried about hurting every time she was a little... powerful.

He threw the ball up and served, planting it neatly in the corner of the box. She returned, not as quickly as she would have liked, and he won the point.

"You make your sex face when you concentrate," she teased as he prepared to serve again. He hit the ball into the net.

"No heckling," he complained, collecting the ball to serve again.

He served more slowly and Kate grunted as she swung at the ball, slamming it into the far baseline. Rick couldn't be upset about the fact that she'd just won a point; the sound she had just made was stirring things in him that hadn't been stirred since... Well, since last night when she got out the ready whip, but that was beside the point. And it felt like that had been weeks ago. Months ago.

The game continued; they'd gone for best of three sets because of the heat, and Rick managed to bag the first set, though it was close. Kate pulled up the bottom of her top to wipe the sweat off her forehead. Rick was given a full view of her stomach and hypnotic bra...

The top went down; Kate had reached the bench and picked up her towel. She wiped her face and took a swig of her water. Rick joined her to do the same.

"Well played," he said, smirking.

"Shut up," she muttered, but she was smiling too.

Kate served first in the second set and seemed to be spurred on by losing the first to be far more aggressive in this one. She was ahead 5:3 in a flash, serving to win the set. Rick seemed... rather distracted in her service games. Even when she served almost at his racket, he had a lot of trouble returning. Or when they got into a rally, even, whenever she hit the ball he reacted... interestingly.

She was going to win. Rick just knew it; he couldn't concentrate on tennis when she was... Not only was she jumping about in those ridiculously tight and attractive clothes, not only was he getting a first class demonstration of what those legs could do... The sounds she made as she hit the ball were... so similar to sounds he could produce from her in very different circumstances that he was wondering more and more if perhaps the two sets of circumstances were going to have to be aligned.

She didn't seem aware of it at all. If she was she was the cruellest woman alive; those smiles she flashed him, the twinkle in her eyes... He was desperately thirsty, a thirst water just couldn't quench.

She prepared to serve for the final point of the match, and again she let out a moan worthy of-

He didn't even bother to try and return the ball. Instead, he walked towards her, straight around the net, threw down his racket and grabbed her in a sweaty, desperate kiss. She melted into him almost immediately; her racket hit the grass too and her hands slid under his shirt. His tongue explored her mouth and she let out another moan; she finally made the connection and kissed him all the harder.

The sun beat down on the court; it was incredibly hot. Kate felt Rick's hands in her hair, ripping out her scrunchie and dispensing with her headband. His cap was gone already; she pushed him away so she could pull off his shirt. She struggled with hers and had to laugh as her breasts jiggled out of her sports bra.

"Still my favourite item in your wardrobe," Rick muttered as he leaned down to kiss her breasts, wet with sweat, nipples already puckered with arousal. There was that moan again; he let out one of his own just at the sound. He moved to kneel in front of her, ignoring the hard surface that dug into his knees, his kisses trailing lower and lower until they were interrupted by her skirt. He tugged it down and helped her out of it, but after a few kisses just shy of where she liked them most, Kate moved down to be on the ground with Rick, capturing his lips again and letting his fingers go where his mouth had been.

Her hands were busy tugging at his shorts, which were under a lot of strain, but he brushed them away. Kate sighed with pleasure. He always made her go first, because she could – and because he could make her, because she would agree. He liked having a little control, and while she'd never voice it, she liked that he had it.

His hands were parting her legs now, long fingers finding a dripping wetness that wasn't just sweat. Kate pressed her hot body against his, enjoying the friction of them so close together, forcing two of his fingers deeper inside her. She began a steady rocking motion, releasing a tennis-like groan each time he brushed her centre. She gripped his shoulders now to keep her balance; she parted her knees wider and he twisted his hand to rub her harder.

Her eyelids fluttered; she was so close. She sucked on the skin by his neck, fireworks dancing in front of her as the sun almost burned her skin. She came loudly - she knew he liked the noise - shattering over his hand. Still trembling with aftershocks, she roughly pulled his fingers out of her and reached for his shorts, quickly pulling them out of the way. He was so ready.

She turned around, not hugely keen to lie on the hard surface, and also aware that this way was tighter, better for him. She didn't mind it either. She leaned forward, turning her head back to give him a wink. He pushed into her, grabbing her hips, loving that she liked it, sliding one hand forward to grab her breast. She didn't think her arms could last much longer; he seemed to know and moved more quickly.

Soon he was doing some moaning of his own, less attractive than a woman's, Kate thought, though she said so herself. Her arms buckled pretty much as he came, but he tipped them back and guided her onto his lap, his fingers finding her until she screamed out his name.

They collapsed side by side on the hard packed earth letting the sun seep into their endorphin-filled bodies.

"You know," Rick said with a grin. "If you'd used my name when you hit those balls, you'd have won the first set too."

They met another couple as they walked off the court; they were lucky Rick had booked it for three hours. The woman looked at their grazed knees and palms, and grass stained clothes.

"Rough match?" she asked.

"Very," Kate said. "And we never actually finished."

"I think we completed enough," Rick chuckled, patting her ass. Kate rolled her eyes.

"Have a good game," she said to the couple.

"Yeah, sorry if the far end's a bit scuffed. We may have taken a tumble."

This earned him a hard pinch on the arm when they were safely in the locker room. Rick laughed more.

"You're still going to shower with me," he said as they collected their things.

"I am not. Why would I?"

Rick deftly swiped her bag and hurried into the men's room with it. "Because I have your stuff," he said simply.

"You may have had my stuff," Kate said, raising her eyebrows. "But you're not having it again until you give me my bag back and let me go shower."

A/N: Apologies for the bad jokes. They were just so Castle, I couldn't resist. Please review! And well done Andy! x