Every new sports league encounters challenges related to its competitive structure.

For the B. League, nearing the end of its second season, the biggest challenge is to create a more competitive balance among the teams: 18 in B1 and 18 more in B2.

There are six top-flight teams with 30-plus victories through the 47-game mark on Wednesday: SeaHorses Mikawa (39-8, winners of 15 straight), Ryukyu Golden Kings (36-11), Alvark Tokyo and Chiba Jets Funabashi (both are 35-12), Kawasaki Brave Thunders (32-15) and Kyoto Hannaryz (30-17).