Sonay Kartal is taking on former French Open champion Jelena Ostapenko, while world number 719 has Oliver Tarvet has taken the first set against Switzerland’s Leandro Riedi.
Former US Open champ Emma Raducanu takes on British teenager Mimi Xu in the final match on Court One later.
Carlos Alcaraz begins the latest defence of his men’s title on Centre Court this afternoon.
Meanwhile, there’ll be a major change as Wimbledon gets underway today with no line judges present during matches.
They’ve been replaced by video technology which is now common place at many tour events.
There’s been mixed reaction to the tradition being taken away from the All England Club.
Reporter Danyal Khan explains one reason behind the decision.
This fortnight includes the most British players involved since 1984.
23 will play in the men’s and women’s singles, with Emma Raducanu, Katie Boulter and Jacob Fearnley all in action on day one.
They’ll have to adapt to soaring temperatures with highs of 34 degrees celsius expected.
Jacqui Beltrao’s at the All England Club where measures have been taken to keep people safe.
These tennis fans have made their plan to stay cool.