The moon is not a sphere!
It's shaped like an egg - fat end facing earth (that end is tidally locked)
Other known tidally locked objects in our Solar System:
Locked to the Sun
Mercury (in a 3:2 rotation:orbit resonance)
Locked to the Earth:
The Moon
Locked to Mars:
Phobos
Deimos
Locked to Jupiter:
Metis
Adrastea
Amalthea
Thebe
Io
Europa
Ganymede
Callisto
Locked to Saturn:
Pan
Atlas
Prometheus
Pandora
Epimetheus
Janu
Mimas
Enceladus
Telesto
Tethys
Calypso
Dione
Rhea
Titan
Iapetus
Locked to Uranus:
Miranda
Ariel
Umbriel
Titania
Oberon
Locked to Neptune:
Proteus
Triton
Locked to Pluto
Charon (Pluto is itself locked to Charon)
These two are locked to each other they both always see one view of the other.