J-League first-division champions Kawasaki Frontale will raise the curtain on the 2021 season Friday night at Todoroki Stadium when they host Yokohama F Marinos, winners of the 2019 title.After adapting brilliantly to the upheaval of the 2020 campaign -- which was suspended, then heavily condensed, because of the coronavirus pandemic -- Frontale will try to win their fourth J1 crown in five years under another set of unusual conditions.Japan's top flight will feature 20 teams for the first time, after the league decided to suspend relegation last year to avoid further disadvantaging clubs a…READ FULL ARTICLE