In every way. The entry fees are super low and you make your stubs back after beating the 1st red challenge. You gain XP regardless and you eventually make stubs if you finish the showdown. It's a super easy path to the diamond FOTF players.
I honestly don't understand why people complain about this. Yes, it'll cost you some stubs to enter. Sorry you can't have everything for free all the time. Yes, you need to be able to hit some pitches on Veteran. I mean, it's Veteran. And yes, sometimes you will fail. You lose nothing but a few minutes of your time. Get it out of your system and try again.