Both Lee Chong Wei (DUORA 10, New Shoes) and Lin Dan (VOLTRIC Z-FORCE Ⅱ LD, SHBSC6LDEX) advanced in tense three-game affairs. Chong Wei came back from a game down against Boonsak Ponsana to clutch a turn-around victory, sealing the match in his signature fashion without too much trouble at 10-21 21-15 21-16. Lin Dan’s first round match proved more perilous, playing at a game down while fending off match point after match point in the second game. After finally taking the second game at 25-23, he went on to narrowly close the match at 17-21 25-23 21-17.
In women’s singles, Akane Yamaguchi (VOLTRIC 70 E-tune) advanced into the second round in straight games, defeating Korea’s Ji Hyun Sung for the first time at 21-18 21-12. Carolina Marin (NANORAY Z-SPEED, SHB-02LX) got revenge for her Indonesia Open first-round exit against Yui Hashimoto (NANORAY 800). The two battled it out in the first game, exchanging constant match shots, drawing time and time again, with the Japanese shuttler claiming the first game with a staggering score of 29-27. However, the two-time world champion came roaring back to take the last two games, letting go of her lead only once, closing the match at 27-29 21-15 21-18.
In men’s doubles, Mathias Boe (ARCSABER 11, SHBSC6iEX) and Carsten Mogensen (ARCSABER 11, SHB87LTD) also avenged a previous loss. The Danish duo gasped a 21-17, 21-17 straight-game win over Chinese pair Liu Xiaolong and Qiu Zihan, who had won in their previous encounter at the BWF World Championships. World champions Mohammad Ahsan (NANORAY 900, SHB-75EX) and Hendra Setiawan (NANORAY 900, SHB-75EX) advanced quickly in under 30 minutes against local pair Kenta Kazuno and Kazushi Yamada at 21-17, 21-12. In women’s doubles, Kamilla Rytter Juhl (NANORAY 900, SHB87LTD) and Christinna Pedersen(NANORAY 800, SHB-02LX) proceeded into round 2 with a brisk 21-19, 21-12 win over Yuki Fukushima and Sayaka Hirota, while in mixed doubles Chris Adcock (VOLTRIC Z-FORCE Ⅱ, SHB-02MX) and Gabrielle Adcock (VOLTRIC Z-FORCE Ⅱ, SHB-02LX) also won in short order at 21-17 21-12 against Korean Shin Baek Choel and Yoo Jung Chae.
YONEX OPEN JAPAN 2015 Results
Men’s Singles Round 1
 Lin Dan (VOLTRIC Z-FORCE Ⅱ LD, SHBSC6LDEX) (CHN) def. Son Wan Ho (KOR) 17-21 25-23 21-17
[Q] Lee Chong Wei (DUORA 10, New Shoes)(MAS) def. Boonsak Ponsana (THA) 10-21, 21-15, 21-16
Tommy Sugiarto (VOLTRIC 80 E-tune)(INA) def. Hsu Jen Hao (TPE) 21-10 21-17
 Chou Tien Chen (VOLTRIC 70 E-tune, SHB02LTD)(TPE) def. Sho Sasaki (JPN) 21-14 21-12
 Viktor Axelsen (ARCSABER 11, SHB-87EX) (DEN) def. Ajay Jayaram (IND) 21-10 21-10
[Q] Ihsan Maulana Mustofa (INA) def. Marc Zwiebler (ARCSABER 11, SHB-87EX)(GER) 21-1518-2121-18
Women’s Singles Round 1
 Carolina Marin (NANORAY Z-SPEED, SHB-02LX)(ESP) def. Yui Hashimoto (NANORAY 800)(JPN) 27-29 21-15 21-18
Akane Yamaguchi (VOLTRIC 70 E-tune)(JPN) def.  Sung Ji Hyun (KOR) 21-18 21-12
 Ratchanok Intanon (VOLTRIC 70 E-tune, SHB-02LX)(THA) def. Yip Pui Yin (HKG) 21-18 21-18
 Saina Nehwal (NANORAY 900, SHB02LTD)(IND) def. Busanan Ongbumrungpan (THA) 21-14 22-20
Men’s Doubles Round 1
 Mohammad Ahsan (NANORAY 900, SHB-75EX)/Hendra Setiawan (NANORAY 900, SHB-75EX)(INA) def. Kenta Kazuno/Kazushi Yamada (JPN) 21-17 21-12
 Mathias Boe (ARCSABER 11, SHBSC6iEX)/Carsten Mogensen (ARCSABER 11, SHB87LTD)(DEN) def. Liu Xiaolong/Qiu Zihan (CHN) 21-17 21-17
Women’s Doubles Round 1
 Kamilla Rytter Juhl (NANORAY 900, SHB87LTD)/Christinna Pedersen(NANORAY 800, SHB-02LX)(DEN) def. Yuki Fukushima/Sayaka Hirota (JPN) 21-19 21-12
 Greysia Polii (NANORAY 900, SHB-75EX)/Nitya Krishinda Maheswari (NANORAY GlanZ, SHBF1NMX)(INA) def. Naoko Fukuman/Kurumi Yonao (JPN) 16-21 21-12 21-11
Mixed Doubles Round 1
 Chris Adcock (VOLTRIC Z-FORCE Ⅱ, SHB-02MX)/Gabrielle Adcock (VOLTRIC Z-FORCE Ⅱ, SHB-02LX)ENG) def. Shin Baek Choel/Yoo Jung Chae (KOR) 21-17 21-12