Brothers, in the Greatest Four
Tiger meets up with Grey Wolf but refuses to acknowledge him as his brother after realizing that they are opponent in tomorrow's battle! What is Tiger doing? Tiger isn't his usual self and takes quite a beating from his brother who is very upset about Tiger's behavior. Just then, the Baddies attack! Just what is going on?
Aired 05/08/2000EP 18 - Brothers, in the Greatest Four

2000
Monster Rancher (2000)
Genki is a boy who loves playing video games. One day he's zapped into the world of Monster Rancher and meets the girl Holly and the monsters Mochi, Suezo, Golem, Tiger and Hare.
Continuing from where the original story left off, Genki and friends journey to conquer the legend cup in hopes of freeing Holly's father from the mystery disc.
(Source: AniDB)