Every time when there is a hopeless situation Guinan has some ideas how to solve it for now. Thats the reason why Picard wanted her strongly on the team. No matter that she is not that much addicted to sports.

Finally her short career on the pitch is over. She didn't loved BloodBowl that much and was killed in action on one of the first blocks a crappy human team made. But she'll be in perfect shape sooner or later. Not for anymore BloodBowl games, but for the fun of living.