Badosa, who last week lost her Eastbourne opening to Jodie Burrage, has bounced back to secure her spot in the Wimbledon third round.
Caroline Wozniacki, Victoria Azarenka, and Jelena Ostapenko are the only other players to have made four or more WTA 1000 semifinals before turning 21.
For the first time in five meetings, Jabeur managed to get one past the two-time Wimbledon champion.
Rybakina is fresh from reaching her eighth career final in Adelaide last week before falling to Ashleigh Barty in the title match.
This comes after the former World No.1 lost to Facundo Bagnis in his first match of the season last week in Melbourne.
Petra Kvitova had survived two match points in the final set to overcome Arantxa Rus, 3-6, 7-6, 7-5.
Former world number three Stephens arrived in London without playing on a grass court. However, that was not really visible. She broke Kvitova's serve twice to take the opening set...
Kerber seemed relieved after the match as she spoke about how much the victory meant to her, especially ahead of Wimbledon.
The 31-year-old injured her ankle after a freak fall as she was finishing a post-match press conference on Sunday.
Round 1 of the French Open 2021 began on Sunday (May 30), and Japan's Naomi Osaka started the tournament with an easy win.