Natsu Basho
1966

After day 15, Yokozuna Taiho leads the tournament at 14–1. Among the top ranks, Yokozuna Kashiwado lost to Taiho by yorikiri, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama beat Kitanofuji by sukuinage and Ōzeki Kitabayama lost to Tamanoshima by sotogake. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 14, Yokozuna Taiho leads the tournament at 13–1. One win back, Yokozuna Kashiwado leads the chase. Among the top ranks, Yokozuna Kashiwado beat Yutakayama by yoritaoshi, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama lost to Kashiwado by yoritaoshi and Ōzeki Kitabayama lost to Taiho by uwatenage. Kanenohana won by utchari, a rarely seen technique. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 13, Yokozuna Taiho leads the tournament at 12–1. One win back, Yokozuna Kashiwado leads the chase. Among the top ranks, Yokozuna Kashiwado beat Kitabayama by yorikiri, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama beat Kiyokuni by abisetaoshi and Ōzeki Kitabayama lost to Kashiwado by yorikiri. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 12, Yokozuna Taiho leads the tournament at 11–1. One win back, Yokozuna Kashiwado leads the chase. Among the top ranks, Yokozuna Kashiwado lost to Kitanofuji by uwatenage, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama beat Daigo by utchari and Ōzeki Kitabayama beat Kiyokuni by shitatenage. Kotozakura won by utchari, a rarely seen technique. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 11, Yokozuna Taiho and Yokozuna Kashiwado share the lead at 10–1. One wrestler is one win behind the leader. Among the top ranks, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama lost to Hasegawa by sotogake and Ōzeki Kitabayama lost to Kitanofuji by tsukidashi. Kirinji won by utchari, a rarely seen technique. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 10, Yokozuna Taiho and Yokozuna Kashiwado share the lead at 9–1. One wrestler is one win behind the leader. Among the top ranks, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama lost to Tamanoshima by uchigake and Ōzeki Kitabayama lost to Myobudani by tsuridashi. Wakanami won by utchari, a rarely seen technique. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 9, Yokozuna Taiho and Yokozuna Kashiwado share the lead at 8–1. 2 wrestlers are one win behind the leader. Among the top ranks, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama beat Fujinishiki by yorikiri and Ōzeki Kitabayama lost to Kotetsuyama by shitatenage. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 8, Yokozuna Taiho, Yokozuna Kashiwado and Kainoyama (M6) share the lead at 7–1. 3 wrestlers are one win behind the leader. Among the top ranks, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama lost to Taiho by yoritaoshi and Ōzeki Kitabayama beat Kirinji by uwatenage. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 7, Yokozuna Taiho, Yokozuna Kashiwado and Kainoyama (M6) share the lead at 6–1. One win back, Ōzeki Yutakayama leads the chase. Among the top ranks, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama beat Hirokawa by tsuridashi and Ōzeki Kitabayama lost to Daigo by yorikiri. Toyokuni won by sabaori, a rarely seen technique. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 6, 4 wrestlers are tied for the lead at 5–1, among them Yokozuna Taiho and Yokozuna Kashiwado. One win back, Ōzeki Yutakayama and Ōzeki Kitabayama lead the chase. Among the top ranks, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama lost to Kirinji by yoritaoshi and Ōzeki Kitabayama beat Wakachichibu by yorikiri. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 5, 8 wrestlers are tied for the lead at 4–1, among them Yokozuna Taiho and Yokozuna Kashiwado. One win back, Ōzeki Kitabayama leads the chase. Among the top ranks, Yokozuna Tochinoumi sat out, Yokozuna Sadanoyama sat out and Ōzeki Kitabayama lost to Fujinishiki by sukuinage. Kirinji claimed a kinboshi over Yokozuna Kashiwado. Wakanami won by utchari, a rarely seen technique. Yokozuna Tochinoumi, Yokozuna Sadanoyama and Asasegawa (M1) remained out through kyūjō.

After day 4, Yokozuna Kashiwado leads the tournament at 4–0. One win back, Yokozuna Taiho, Ōzeki Yutakayama and Ōzeki Kitabayama lead the chase. Among the top ranks, Yokozuna Taiho beat Kitanofuji by hatakikomi, Yokozuna Tochinoumi lost to Kotozakura by fusen, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama beat Kotetsuyama by yorikiri and Ōzeki Kitabayama beat Hirokawa by hatakikomi. Kotozakura claimed a kinboshi over Yokozuna Tochinoumi. Tochioyama won by utchari, a rarely seen technique. Yokozuna Sadanoyama remained out through kyūjō.

After day 3, 4 wrestlers are tied for the lead at 3–0, among them Yokozuna Kashiwado and Komusubi Kiyokuni. One win back, Yokozuna Taiho, Ōzeki Yutakayama and Ōzeki Kitabayama lead the chase. Among the top ranks, Yokozuna Taiho beat Hirokawa by hatakikomi, Yokozuna Tochinoumi lost to Fujinishiki by yorikiri, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama beat Myobudani by tsuridashi and Ōzeki Kitabayama beat Hasegawa by tsuridashi. Fujinishiki claimed a kinboshi over Yokozuna Tochinoumi. Yokozuna Sadanoyama remained out through kyūjō.

After day 2, 8 wrestlers are tied for the lead at 2–0, among them Yokozuna Kashiwado and Sekiwake Tamanoshima. One win back, Yokozuna Taiho, Yokozuna Tochinoumi, Ōzeki Yutakayama and Ōzeki Kitabayama lead the chase. Among the top ranks, Yokozuna Taiho beat Fujinishiki by yorikiri, Yokozuna Tochinoumi lost to Tamanoshima by yorikiri, Yokozuna Sadanoyama sat out, Ōzeki Yutakayama lost to Kotozakura by yoritaoshi and Ōzeki Kitabayama beat Wakamiyama by utchari. Kainoyama won by kubinage, a rarely seen technique. Yokozuna Sadanoyama remained out through kyūjō.

After day 1, 20 wrestlers are tied for the lead at 1–0, among them Yokozuna Kashiwado and Yokozuna Tochinoumi. One win back, Yokozuna Taiho and Ōzeki Kitabayama lead the chase. Among the top ranks, Yokozuna Taiho lost to Kiyokuni by shitatenage, Yokozuna Sadanoyama sat out and Ōzeki Kitabayama lost to Kotozakura by abisetaoshi. Yokozuna Sadanoyama remained out through kyūjō.