Black Jack, the Mighty, relatively intelligent Ogre who founded The Jacks was kicked out from an Ogre League, acused of paying more attention to the ball than smashing his opponents.
He then decided to start his own team, as Coach instead of playing himself. He hired Jacks like himself (he thought) from everywhere he could find them. His thoughts was to create a team so extraordinary that it would attract all kinds of fans from all over the world, earning the team, and of course the Head Coach a place in the history books.
Rumor has it, that Black Jack's long term plan is to earn enough money from The Jack's merchandise and the ticket revenue from the played matches, to finally be able to avenge his removal from the Ogre League, by buying the entire League and kick out every single violent Ogre and start a more peaceful, goblin-filled league.

After The Jacks' first 9 games with only 1 victory and 1 draw, Black Jack finally brought his own playing gear to the field. He's refound the joy of playing and hasn't regretted his return to the Pitch.
In the first game after re-entering the sport of Blood Bowl, Black Jack led The Jacks to their second victory!
Black Jack's second game also ended victorious for The Jacks! The Jacks are now on a non-stop 2-game winning streak since Head Coach Black Jack started playing himself!