Aged 42 and 270 days, the Japanese player on Tuesday defied her years once again as she took just 44 minutes to beat Carina Witthoeft in Wimbledon's first round.
To add some context, when Date-Krumm reached her highest-ever ranking of fourth in the world in 1995, it was the year Tuesday's opponent was born.
As a caveat, Date-Krumm did take a 12-year break between 1996 and 2008, but even taking that into account, her staying power remains outstanding.
There is no special reason as to why, though, other than a passion for Chinese and Japanese teas, as well as her appetite.
She carries a teapot around with her at all times - it made an appearance in her post-match press conference - and she said: "I like Chinese tea. Sometimes Japanese tea. I drink a lot. I have a teapot, so I always carry it.
"But I eat a lot. I eat more than my husband. I eat more than my coach. So I eat a lot. But, of course, I eat healthy food."
Krumm's run to Wimbledon's last four in 1996 - she was halted by the great Steffi Graf - was one of three semi-final appearances in slams before she retired.
Since returning five years ago, her career has been made up of a number of days like on Tuesday, almost giving her an extended lap of honour wherever she appears.
Without that break, it is unlikely she would have been able to carry on into her forties, but she also admits that it helped her get a different view of the sport.
"When I was 25, I stopped tennis. After 12 years I came back on the tour. In the 12 years I enjoyed my life. I married a German guy," she said, referencing racing driver husband Michael Krumm.
"I never thought I would miss tennis, miss the tour. But I love sports and I love tennis. I was working for TV and watching from outside the court. I thought how tennis is a beautiful sport.
"Then my mind started changing a little bit. When I was young I always practised, trained and needed to win. I had the pressure and did not enjoy it so much.
"After that, when I came back, I enjoyed it very much, even when I'm losing. I have a lot of passion."
Date-Krumm's first-round success makes her one of the oldest Wimbledon winners in recent times, but she still has some way to go to surpass Martina Navratilova, who at the age of 47 in 2004 posted a 6-0 6-1 victory against Catalina Castano.