Yep. Without powerful heavyweight pokemon he doesn't have any chances in the league (especially against Paul). Well we have to wait what happens next. Maybe we're gonna see Buizel or Monferno evolving. Maybe he will change his training method. As for battle.. Grotle did even more he can. It was a pure luck for Ash his Grotle ate his own Energy Ball and became stronger. That's why he could delay knockout.

Brat didn't evolve. I am really disappointed ((

Yeah it would be awesome episode.