From Bado-Scans:
Daichi Yonekawa thinks that badminton is a girl's sport and is forced to practice with his twin sister, Yuki. Daichi finds himself playing Taka Tsubahara, the Japanese Junior Champion, because he is too bored "practicing" with his sister. He soon discovers the thrill of playing badminton and even quits his soccer team to practice badminton full time. He now aims to play against Taka Tsubahara once again but this time on equal grounds...

Seriu Ichiro has always been in the shadow of his older sister, Rei, who did great things as the student body president in her high school. Although he was the student body president at his middle school, he was sick of the responsibility and wanted to live free. That’s when Ichiro decides to attend Yashio Academy, literally a brand new school, where his class would be the first ever class of the school which meant a fresh start for Ichiro. He meets a fellow school mate, Hatsuse Sakuno, on the way to Yashio and as soon as the two walk through the school gate, it's announced that he is the new student body president. As much as he tries to fight fate, he soon accepts the position of student body president on one condition: that Sakuno acts as co-president.

Hungry for a teacher and student relationship? Nope, it’s not about love or romance. It’s all about sport! Find out what happens if both the teacher and student, who have nothing in common and hate each other in the beginning, are connected with hockey as their life. (Source: Doko Demo Doa Manga Scanlations)

Dragon Gon... A 36 year old bachelor and lusterless boxer who is on the verge of retirement. By all expectations, he would quietly and uneventfully retire. Until he happened to meet a vivacious actress... Love, laughter, and boxing; a drama about the prime of life now unfolds!

Koo Tae-Yang is an unofficially retired footballer after going through few tough ordeals in life. He had seemingly given up on professional football until approached by his former teammate who offered a chance for a restart in FC Dalin of Chinese Super League. At 34 years old, there isn't much left in his career but it doesn't mean it has to end with a low key... 

N/A

The main character wants to be a hero, but his father is a bum that loses all of their money in gambling, but he was once the ace of the japanese team in handball. He goes to a coach and asks him to take care of his son, because he got into a debt and is running from the yakuza. The coach thinks he's an outstanding talent that has been given to him to coach, and he sends his daughter to pick him. Daigo (the main character) then ends up living with them.

The series was based off the oneshot that Weekly Shonen Jump liked so much that they made it into a series

Sawaki Yuko wishes for her prince from the sunset and he arrives from the ocean. Katsuragi Ken'ichi , prince charming, is as close to perfect as you can come with one major flaw.

The first tankoubon in the original edition also contains a short story entitled: Isourou yori hitokoto (A Bit More Than a Freeloader).

The second tankoubon in the original edition also contains a short story entitled: Nakayoshi uta (The Poem Of Friendship).

N/A

Racing cars are machines made purely for power and speed and, even from a young age, Manaka Mao has always had a fascination with them. When Mao was 5, fate brings him together with Tsuji Yoshiki, the best F1 racer in Japan where Mao gets his first look at a F1 car and, right then and there, he decides that professional racing is where his life is. Tsuji takes a special interest in him because of his exceptional concentration skills and observation capabilities, both crucial for the best racers. Several years later, Mao gets an invite from Tsuji to apply for FRS, a training camp / school for young racers where only the most talented racers are even accepted. There, Mao starts his journey of being nothing less than number 1 and becoming the first Japanese F1 champion. 

A pretty-boy volleyball player named Akira gets kicked out of his middle school team for being too arrogant. With his coach refusing to give him a reference, it looks like he will only be able to go to a high school with a mediocre volleyball team. By chance, he finds a leaflet for Seiryoh High School volleyball team and decided to try out. But then complications arise in the form of a delinquent with very curly hair. (Source: Doko Demo Scans)

Spin-off of Prince of Stride told from the perspective of rival school, Saisei Gakuen.

From MangaHelpers:

Gaie Kensei is just starting his high-school life, at the same school as his childhood friend Nireki Hikari. His high school boasts a highly competitive kendo club, and Kensei is excited to join and begin learning from the older students. However, the fact that Kensei's father is a legendary kendo competitor works against him. Once the other club members learn that Kensei is not as good as his father, they refuse to let him join the team.

Wandering around in despair, Kensei comes across the secret hideout of Ashihara Naoto. She seems highly skilled in kendo, though she spends all her time reading and claims she hates the sport. Naoto reluctantly helps him train up to prove his worth to the kendo club, though she refuses to join the club herself. On the final day of club sign-ups, Kensei finally makes it into the Kendo club, along with his childhood friend Hikari, who becomes the first female member! Their kendo-centric high-school life is only beginning!

4-koma manga about the daily life of a clumsy jansou clerk that happens to be a powerful mahjong player.

An amazing high-school soccer player, Amagai Rihito, is making his debut! He intended to enter a high school famed across Japan for its elite soccer team, but a little mix-up with the school name has left him at a school with an incredibly weak team. After the initial shock of discovering this, Rihito decides that he's willing to work to help his weak team become the best in Japan. The only problem is the rest of the existing team is cold and unenthusiastic. Will his challenge to take on the whole team single-handedly break them out of their apathy?

Includes the story Q Bu!! in vol.2. and Dodge Ball in vol.3.

Mariko Kazunori ("Nori") is a 28-year man who hated bicycles until he almost runs over roadracer Oda Rin.

Nonomiya Yuuta, a ski Jumper aiming for Olympic gold, bursts onto the stage with his exceptional skills. However, his biggest problem is that he is not really a "HE"... The person claiming to be Nonomiya Yuuta is actually his twin sister, Nonomiya Nono... And with women's ski Jumping not being an official Olympic category, hiding her true identity is the only way for her to achieve the dreams of her father and brother and win Olympic gold.

Through middle school, best friends Miho Shirokawa and Miho Yoshii bowled together. But since Miho Yoshii has moved to a high school in Hokkaido, Miho Shirokawa just hasn't enjoyed bowling like she used to.

One day Yoshii calls to talk about her interest in a new sport-- curling! Yoshii's high school curling team has decided to try to make it into the next olympic winter games! Shirokawa thinks about quitting bowling and joining a curling team as well, but unfortunately, there isn't one at her high school. At least, there isn't until Shirokawa accidentally sells the idea to a former figure skater, Rin, and her friend Endou.

Before she realizes what's happening, Shirokawa's has become the founding leader of her school's Curling Club! How will she face all the difficulties of starting up the team, when she only has the vaguest idea of what the sport of curling is even about?!

Kuryuuin Getsuka loves martial arts and she won a championship in middle school but her father forcibly stopped Getsuka from doing martial arts. She was brought back to a high class all-girls academy that she went to when she was in elementary school and it was where there isn't any martial arts club, so she started her own martial arts association.

Sakura Nakahara is a middle schol girl that is in love with her cool neighbor Takehiko. Following a trendy charm she writes down Takehiko's name but it is discover by her classmate, Yuki, who's in love with her. Sakura begs Yuki to keep it a secret so he agrees if she promises to do things for him. After sometime, eventually Sakura falls in love with Yuki...