Why do many Ground types have Mud Sport?

Question

It weakens Electric type moves, but why have it on a bunch of Ground types. What is the point of having a move that weakens an attack when those types of attacks (Electric type moves) can't even damage you (Ground types)?

Comments

Because mud is considered part of the ground. Logic.

Though you mean in a more practical way... Well, just remember that Mew (and Cryogonal) can learn Attract.

---

Blastoise can learn Mud Sport, which is kind of useful

---

Also remember that double battles exist, and a team could be made up of, say, a ground type and a flying type.

---

Game Freak logic

Answer 1

There are actually a few reasons why so many ground types learn mud sport even tho they can't make use of it.

Because mud is considered part of the ground. Logic.

stephwheel8-

You may say:
"well that makes logical sense but not at all when it comes to game mechanics" ground types can still make use of mud sport in game mechanics, here is how:

Also remember that double battles exist, and a team could be made up of, say, a ground type and a flying type.

stephwheel8-

One thing everyone forgot about are contests (mainly because they suck).

Mud Sport can also be used as part of a Pokémon Contest combination, with the user gaining extra four appeal points if any of the moves Mud-Slap, Sandstorm or Water Sport was used in the prior turn. It can also be used to start a combination, causing the base appeal of Mud-Slap, Water Gun and Water Sport to be doubled if used in the next turn.

Bulbapedia-

Comments

But, wasn't Mud Sport created before contests? Correct me if I'm wrong.

---

No it was introduced in gen 3, the same gen that introduced contests.

---

Thanks. This helps a lot.