And now, onto the women's category. Here are the stars to look out for in Dusseldorf:
Pool A: Mongolia's Urantsetseg Munkhbat should win this pool easily.
Pool B: Japan's double World Champion Haruna Asami is still in top form and is the one to watch here.
Pool C: Brazil's Olympic champion Sarah Menezes will likely dominate this pool.
Pool D: Japan's young star and world champion Ami Kondo is the overall top favorite in this weight class. She recently beat Asami in the 2014 Tokyo Grand Slam. All eyes will be on her. Belgium's Charline Van Snick is on her comeback trail here but should not be an obstacle to Kondo.
Pool A: Without doubt, Romania's Andreea Chitu is the top favorite but Japan's Yuka Nishida is making a comeback here.
Pool B: No real favorites here.
Pool C: Germany's Romy Tarangul is a (male) fan favorite but the likely winner in this pool is Brazil's Erika Miranda.
Pool D: Japan's double World Champion Misato Nakamura is the one to watch.
Pool A: France's Automne Pavia is the top dog here.
Pool B: Romania's Corina Caprioriu will probably top the pool here and is probably the overall top favorite for this category, especially since Japan's Kaori Matsumoto is not competing.
Pool C: No real favorite although the USA's Marti Malloy will likely top the pool.
Pool D: This is probably the toughest pool with Brazil's Rafaela Silva and Japan's world champion Udaka Nae likely to meet in the early rounds. Whoever wins will likely top the pool.
-63kgPool A: Not a very exciting pool although it'll be interesting to see how Alice Schlesinger performs for her new country, Great Britain.
Pool B: Also not very exciting.
Pool C: This is the third not-so exciting pool in this category.
Pool D: Make this the fourth not exciting pool in this weight class.
Pool A: Laura Vargas Koch is Germany's best hope for a gold medal in Dusseldorf.
Pool B: Morocco's Assmaa Niang could be a dark horse.
Pool C: Canada's Kelita Zupancic could be another dark horse.
Pool D: No clear favorite here.
Pool A: German fans will also be looking towards Louise Malzahn to deliver a gold medal here. If her teammate Vargas Koch can deliver a gold, perhaps she can deliver the second gold?
Pool B: USA's Kayla Harrison will be looking to stamp her authority here.
Pool C: Zzz...
Pool D: Probably Hungary's Abigel Joo will win this pool.
Pool A: A potential third German gold medal could come from Franziska Konitz.
Pool B: Not very exciting although Japan's Kanae Yamabe will probably top the pool. Significantly, she recently beat Konitz in the 2014 Tokyo Grand Slam.
Pool C: Quite boring pool.
Pool D: Yawn...