  We study torus fibrations over the 2-sphere and Hurwitz equivalence of their
monodromies. We show that, if two torus fibrations over $S^2$ have the same
type of singularities, then their global monodromies are Hurwitz equivalent
after performing direct sums with certain torus Lefschetz fibrations. The
additional torus Lefschetz fibration is universal when the type of
singularities is "simple".
