The first nine Avengers versus the League of Realms. Khazan Arena, usual defaults except that these Avengers only have their feats from comics published in the 1960s.
Avengers:
Thor (Donald Blake)
Hulk
Iron Man
Wasp
Giant-Man
Captain America
Hawkeye
Scarlet Witch
Quicksilver
League of Realms:
Thor (Jane Foster)
Angela
Ro Bloodroot
Roz Solomon, agent of SHIELD
Screwbeard
Lady Sif
Sir Ivory Honeyshot
Titanya Vaetilda Vinnsuvius
Ud the Troll