Dragon League
English name: Dragon League
Genres: Adventure, Comedy, Fantasy, Sports
Type: TV, Episodes: 39
Aired: May 7, 1993 to Feb 27, 1994
Studio: Gallop
Source: Unknown
Rating: PG-13 - Teens 13 or older
Synopsis:
Tokio and his father Amon go to the soccer country of Elevenia where they see a parade of the strongest soccer team of that country, the Winners. Amon challenges the team captain Leon to a soccer battle and, when Amon loses, Leon turns him into a miniature dragon. Tokio sees the fight and decides to challenge against Leon so that Amon can become human again.

(Source: AnimeNFo)