Powerlifter Mary Gregory — a biological male competing as a transgender female — announced Saturday on Instagram setting four women's world records in one day at a Raw Powerlifting Federation event: Masters world squat, open world bench press, masters world deadlift, and masters world total.

"As a transgender lifter I was unsure what to expect going into this meet and everyone — all the spotters, loaders, referees, staff, meet director, all made me welcome and treated me as just another female lifter," Gregory added. "Thank you!"

But not everybody cheered for Gregory

However, a pair of Olympic medalists — who happen to be biological females — decried Gregory's world record-setting efforts.

First up was former swimmer Sharron Davies who won a silver medal for Great Britain in the 1980 Summer Olympics. Davies — who's been outspoken against transgender females competing against biological females — tweeted that Gregory has a "male body with male physiology" and that a "woman with female biology cannot compete. It's a pointless unfair playing field."

Replying to Davies' tweet was Dame Kelly Holmes, who won a pair of gold medals — the 800-meter and 1,500-meter races — for Great Britain at the 2004 Athens Olympics.

Holmes noted that "it's a bloody joke and all getting ready for biological women to boycott certain events. Have a trans category if need be but even better a trans games. Otherwise I'm starting to worry about the backlash and abuse that the trans community will get from spectators. It will happen!"

For a peek at Gregory in action, here's an Instagram video from earlier this month:

(H/T: PJ Media)

