WBC bantamweight champion Shinsuke Yamanaka insists attempting to match a 37-year-old Japanese record will not affect his performance when he fights Mexican challenger Luis Nery next month.

Yamanaka, 34, will be aiming to tie former WBA light flyweight champion Yoko Gushiken's record of 13 consecutive world title defenses when he takes on his 22-year-old top-ranked opponent at Shimadzu Arena in Kyoto on Aug. 15.

"It is not something that is playing on my mind," Yamanaka told Kyodo News in an interview. "If I win the next one then tying the record is something that will naturally come with it.