New data on identified baryons in the projectile hemisphere of p+p and centrality-selected p+Pb and Pb+Pb collisions are shown. Information from pion-induced interactions is used to isolate the projectile role in the observed phenomena. A common picture emerges for p+p, p+Pb and Pb+Pb reactions: with increasing centrality, the projectile baryon number is strongly ``pushed'' towards the backward hemisphere of the collision. In the magnitude of this common effect, most central Pb+Pb interactions occupy a medium position between p+p and central p+Pb reactions.

PACS numbers: 25.75.--q, 12.38.Mh