
The best moveset for Tyrantrum in the current competitive meta typically features the moves Rock Slide, Psychic Fangs, Close Combat, Crunch.
In the Pokémon Champions meta, Tyrantrum can be countered by exploiting its weaknesses (dragon 2x, fairy 2x, fighting 2x, ground 2x, ice 2x, steel 2x) and using effective check/counter teams.
The best item for Tyrantrum is typically Choice Scarf, based on high-level tournament and ladder stats.