Sekiwake Wakatakakage, who had been shaping as one of the top candidates for promotion to sumo's second-highest rank of ozeki, has been ruled out of action for up to a year after undergoing knee surgery, his stablemaster said Friday.Wakatakakage damaged the anterior cruciate ligament and meniscus of his right knee while wrestling komusubi Kotonowaka during last month's Spring Grand Sumo Tournament in Osaka and subsequently withdrew from the final two days of the 15-day competition.The popular 28-year-old, who won his first grand tournament in March last year, has held the sport's third-high…READ FULL ARTICLE