This depends on who you are talking about. Throughout the entire game, you can rematch against any normal trainer who has been registered in your Pokenav and has a little Pokeball symbol by their name when you access said Pokenav. The Elite Four can be rematched anytime after their initial defeat, however, their levels will not change. After beating the Elite Four, all gym leaders and Wally will be able to be rematched as well in a similar fashion to the regular trainers.
The match call feature in the pokenav the jym leaders should call you.
its all ready there
It is very simple, you get it in Mauville City where you get the acro bike and the bike shop. You switch between the two.
Emerald.
only if you transfer it from emerald via pal park
it doesn't have a meaning, it is just to try your luck for items and if all numbers match you get a master ball, hope this helps
its all ready there
its not an emerald its RAYQUAZA the main legendary Pokemon in Pokemon emerald.
You can obtain any Pokémon you have captured on the Emerald cart, but you need to go to the pal park to release and re-capture them.
You have to go to the separate gyms. And then win each Gym battle
yes I have Emerald. It is really messed up though. It always restarts. I haven't bothered to re-play after it resarteed last night as soon as I beat the elite four. xD
Keep checking your Pokenav under Match Call. If a gym leader wants to re-battle you, they will have a little flashing pokeball by their name.
u train at mauvile city (re-battle the trainers)
You can get more Master Balls in Pokemon Ruby/Sapphire/Emerald by getting an exact match to one of your pokemons ID number at the Lilycove Lottery. To up your chances of winning, trade Pokemon over different games to get more ID numbers.
You cannot get a Yanma in Pokemon Emerald, as only Hoenn Region Pokemon can be found in Pokemon Emerald.
It is very simple, you get it in Mauville City where you get the acro bike and the bike shop. You switch between the two.
Bike over them really fast. Beware: if you stop, the floor will break.
Sinnoh Pokemon DO NOT EXIST IN EMERALD!!!