Zhdanov broke the longstanding record by over two seconds; Great Britain’s Brock Whiston also downed a 7-year-old world record.
Tai has now won the women’s S8 400 free, 100 fly, 100 back and 100 free this week in London. She was classed down from S9 to S8 last year.
New Zealand’s Sophie Pascoe took down the 50 free, 100 free and 200 IM records over the course of three days in Singapore.
Pascoe also broke the S9 100 free world record on the first day of the WPS World Series stop in Singapore.
Antoni Ponce and Cheng Jiao each set a World Record on day 2 of Para Worlds, while Jessica Long also showed strong.
A total of four WRs went down on Day 3 of the IPC World Championships, and we have the videos here.
Russia has been on fire at the 2015 IPC World Championships, and on day 3, they broke four world records to lead all nations.