WFB meaning in Sports ?

Warhammer (formerly Warhammer Fantasy Battle or just Warhammer Fantasy) is a tabletop miniature wargame with a medieval fantasy theme that simulates battles between armies from different factions. The game was created by Bryan Ansell, Richard Halliwell, and Rick Priestley; it was published by the Games Workshop company.: 47 

As in other miniature wargames, players use miniature models (minis) to represent warriors. The playing field is a model battlefield comprising models of buildings, trees, hills, and other terrain features. Players take turns moving their model warriors across the playing field and simulate a battle. The outcomes of fights between the models are determined by a combination of dice rolls and simple arithmetic. Though the gameplay is mostly based on medieval warfare, it incorporates fantasy elements such as wizards, dragons, and magical spells.

Warhammer was the first commercial miniature wargame designed to use proprietary models. Prior to this, miniature wargames rulesets were designed to use generic models that could be bought from any manufacturer.

The first edition rulebook for Warhammer was released in 1983, and the line was supported for thirty years by model releases, supplementary rulebooks, and new editions of the core rules. The eighth and final edition of the core rules was released on 10 July 2010. The game is no longer supported by Games Workshop, and the last supplementary rulebook was released in 2015. It was replaced later that year by Warhammer Age of Sigmar, which uses the models created for the Warhammer line in a new setting and game system.

The Warhammer setting is inspired by the fiction of J. R. R. Tolkien, Poul Anderson and Michael Moorcock. The fictional background for the game was developed in rulebooks, White Dwarf magazine, Inferno! magazine, and more than 150 novels set in the Warhammer universe. Many of these novels are still in print under the Warhammer Chronicles imprint.