FC Tokyo striker Yoshito Okubo has been diagnosed with a right-foot ligament injury and will need four to six weeks for a full recovery, officials of the J-League first division side said Tuesday.
Okubo, the J1 career scoring leader with 177 goals, was hurt in Sunday's game against Jubilo Iwata at Yamaha Stadium and replaced after 23 minutes.
"He was our main attacking guy, so (his absence) hurts us. I hope we can gain as many points (in the league) as possible in the meantime," FC Tokyo manager Yoshiyuki Shinoda said.
The 35-year-old former Japan striker joined FC Tokyo in January after four years with Kawasaki Frontale. He has a team-high six goals in 15 games this season.
Okubo, who had spells in Spain and Germany with Mallorca and Wolfsburg, joined Kawasaki in 2013 from Vissel Kobe, and in 2015 became the first player ever to top the J1 scoring charts three seasons in a row.