From Divine Sanctuary:

Asahi is a 7th grade student who is very bad at sports. She joined the volleyball club when she entered junior high school, only to quit it one month later because she couldn't keep up with practice. Feeling discouraged from all kinds of sports, Asahi was reluctant when her friend asked her to play a double badminton match to substitute for a member who couldn't play. Surprisingly, Asahi found out that she has talent for badminton...

From Nagareboshi Manga:

Umi has just transferred schools, and she's all set with a dream of putting together a team of ultimate swimmers, called the Splash Five! While recruiting talented boys to wear speedos, will she end up falling in love...?

Aria Hoshina transfers to the prestigious school, Saiko Garden, to be with her father, who told her he supervises a girl's dorm. When she arrives there she finds the 222 BOYS that live there to be troublesome.

From acme: Dame BL is "a collection of BL oneshots written by some of the lesser-known participants in the genre (and some you may be familiar with already), with a focus on less conventional settings and characters. We're very far away from high school here, which hopefully you'll agree makes a pleasant change of pace." 1. Be Here to Love Me (KUMOTA Haruko) The relationship of a foot-fetishist and his cunning colleague. 2. Kou no Kawa (MOROZUMI Sumitomo) Set in ancient times, a village is near starvation due to a bad harvest. For some reason, the young chief takes care of a cursed man he finds lying in the river... 3. Khaa Thoong (Est Em) Can the young Thai kick-boxer rekindle the thirst for competion in a senior boxer after his devastating defeat? Column 1 (AOYAMA Toomi) Useless Side Characters Column 2 (Kashima) Obsession/Favoritism Column 3 (KUSAMA Sakae) Terror! Kappa Lake 4. Natsu no Saigo ni Yosete (UMEMATSU Machie) Two elderly men reminisce about their lives together over a bowl of peaches. 5. Locas! (OKADAYA Tetuzoh) Jean-Luc fell in love through correspondence in a chat with Al. What will occur, when he will decide to meet off-line? Is it really Al that wrote to him in chat? 6. And Robo (CHIBA Ryouko) A touching tale of robot clones... or something. 7. Shinumade BL Shindemo BL (Takeuchi Sachiko) 8. Tonari wa Nani wo Suru Hito zo (UNO Jinia) The unusual love a man has for his fan in the hot summer. 9. Soldier (Zin) A nazi sadist and a prisoner in camp. Excitement, desire, but... what about love? Attachment? Column 4 (KEVIN Komine) Column 5 (COTORINO Deathco) Eronashi BL Column 6 (PSYCHE Delico) Column 7 (YONEDA Kou) 10. Muhou no Shounen (Mochimeko) A story involving a Reckless Young Man and some scary faced gangsters. 11. Ima Doushiteru (ROTTA Ikumi) The funny relationship between a man who has a fetish for soft/chubby things and his fatty otaku-friend. 12. It Must Be (MOMOYAMA Naoko) A story about two professional cyclists and their travails.

From Selene Scans:
Ogata Natsuki is the best player on the Kakuchi Junior High Basketball Team. Which is not saying much because they couldn't even get through the 3rd round of the Prefectural Tournament from freshman year until the end of Junior High. For High School, his friends convince him to try out for the Number One High School Basketball team, Fujiwara Academy. So he goes to live with his aunt who runs a hot springs resort to go and try out for the best. Fujiwara Academy.

The thing is... he's small. So people look down on him and he has trouble convincing people he's any good. Through one thing or the other, he ends up with Tachibana Mitsuki watching her school, St Mariannu High go up against Fujiwara Academy in a practice game. But the thing is, St Mariannu is very weak. Weaker than even his former school. Fujiwara is just toying with them and now they don't even want to finish the game. What will happen now? Will Natsuki ever be able to achieve his dreams of being High School Basketball's Number 1? And will it be with Fujiwara?

Haruyoshi, who has always been stuck as a benchwarmer, plans to start fresh at his new school. Luckily, Haruyoshi runs, literally, into the basketball club manager, Hadzuki, who sees potential in him. However, things won't be a smooth sailing from there.

From ryColaa:
Our hero, who doesn't know how to swim, joins his school swimming club and begins to learn from their star swimmer who loves swimming more than anything. Good thing she's cute and nice to boot!

It all starts when a guy named Yamazaki does ten pull-ups to get into the baseball team because the girl he likes, Naoko, is the manager. But how can he since he has hardly any strength?! If he does ten he'll get a kiss from Naoko. thats all the motivation he needs! But it seems fate isn't always agreeable as some would like it to be. From Baka-Updates: A oneshot about a boy who will do anything to impress a girl that he likes. What he wants is a kiss from her, but will he get one?

From Beyond the Sky:

Akatsuki and his good friend Kiyoharu (whom Akatsuki calls Kiyo-chan) have been playing one-on-one basketball for quite sometime. Unfortunately, things started to change after they joined a very strong basketball team in their new school. Both of them were forced to separate into two groups: Kiyoharu was in the "B" group, and poor Akatsuki was put under "F" group, which is known as the "Failure" group. However, Akatsuki was not discouraged at all. He continues to train hard and always has a smile on his face. Will Akatsuki succeed in his promise to Kiyoharu to become an official player? And what is blocking the path to his goal?

Fifteen-year-old Otawa Ryuuichi decides to train in karate after being dumped by a girl who only liked strong guys.

Poor, in debt, and living on instant noodles, high school kendo instructor Kojiro makes a bet with an old friend on a practice meet between the all-girls’ teams of their respective schools. The prize: a year’s worth of free sushi! It’s too good for the desperate Kojiro to pass up! But with only one active member on the kendo team, Korjio must move quickly to put together a squad before the meet. He’s got his eye on Tamaki, the daughter of a kendo master and a skilled swordswoman herself. The only trouble is…she’s not interested. Kojiro’s willing to try anything, but what will it take to win her over?

Miku is on the same tennis team as her childhood crush, Tomo-nii.
Not only can this guy kick ass in tennis, he's also good-looking and super nice! The only thing that Miku doesn't like about him is his brother, Natsume. Completely opposite from his older brother, Natsume is known to play girls, and be a basic cocky pain in the neck.
But one day, Miku finds out something about him that ends up shocking her to no end...!!

Take Isamu is the best at everything he does at school, from looks and smarts, to his luck with girls and his abilities as an athlete. He considers himself to be in the top percent of his age group and is incredibly bored with interacting with the so called "normal people". That is until a new student, Kaname Moka, transfers into his school and, as she is quite pretty, Isamu asks her out. Moka mishears what he says and thinks he wants to challenge her to a fight, as she grew up on boxing. Determined to win her heart, Isamu decides to become a great boxer, with the help of new friends and allies he and Moka meet along the way.

From Moi-xRyu Scanlations:

This spring, Tokyo TV's newly employed announcer Fukuro was given the task to gather information & do a close report on the infamous hunk of the professional baseball world; Shiratori Reiichi. Given this important opportunity Fukuro is determined to do his best! However, the following morning he wakes up to a stark naked Shiratori sleeping beside him, trouble ensues!

The demanding and selfish Shiratori with the hard working and Timid Fukuro! Watch as their love story unfolds.

Katsuragi Anna is a former ballerina who tries to find herself when her dreams of ballet stardom fall flat. She is tricked into joining the archery club by her friend... only to find that the president is her childhood rival, Jinnai!?

Katsuragi Anna is a former ballerina who tries to find herself when her dreams of ballet stardom fall flat. She is tricked into joining the archery club by her friend... only to find that the president is her childhood rival, Jinnai!?

This is the tale of how Adachi Mitsuru went from being an assistant artist on a weekly manga to the superstar manga-ka we know him to be today. But it’s told (and written by) Mitsuru’s older brother Tsutomu, who was also an assistant artist early on in their careers…

1-5, 6-11) It's all the little things that Ikeuchi does that makes Shinoda want him. Shinoda's been gay for as long as he can remember, but he's still a virgin. Then he falls in love with Ikeuchi, a younger man on the same basketball team. However, Ikeuchi has a girlfriend... is there any way Shinoda can make him want him?

5.5) Hotta-san is secretly in love with his co-worker Yoshi, but Yoshi saw Hotta-san and their boss going at it in the Archives Room. Is there any hope for Hotta-san and Yoshi?

5.6, 12) 2 short stories about Shin and Haruhiko.

Anthology of oneshots about the Hanshin Tigers, from various authors.