Two-time world champions Viktor Axelsen and Akane Yamaguchi stayed in contention for second successive titles after progressing to the semifinals of the men's singles and women's singles competitions, respectively, at the Yonex-Sunrise India Open here on Friday.
 

Axelsen, the reigning Olympic champion, advanced to the final four after his opponent Rasmus Gemke suffered a leg injury midway through the opening game and had to be taken off the court in a wheelchair.
 

World No. 1 Yamaguchi, however, had to toil hard to get across three-time world champion and Rio gold medallist Carolina Marin of Spain 21-17 14-21 21-19 in the day's first match at the IG stadium here.