Imported from Japan. These Sumo trading cards are based on the March, 2015, rankings. Each pack contains 5 random cards. The complete set has all 42 top division (Makuuchi) wrestlers, 10 referee and yobidashi cards, 11 "beauty of the sumo ring" cards, 12 top stars, 6 young and spirited second division wrestlers (including Abi and Ishiura's first time in juryo) for a set total of 81. See the scanned checklist for details (which are in Japanese). There are also 9 different autographed cards included randomly across every few boxes (24 packs per box). Most of the text on the cards is in Japanese, however, the wrestler's English language name is also on the card for those of us who don't speak Japanese. This series is sometimes called "Essence".
Yokozuna for this series are Hakuho, Harumafuji, and Kakuryu.
Ozeki are Kisenosato, Kotoshogiku, and Goeido.
Sekiwake are Terunofuji and Okinoumi.
Komusubi are Tamawashi and Myogiryu.
Check out this link for the Makuuchi rankings from March, 2015, for a complete listing of all top division wrestlers.