Transverse momentum distributions (TMDs) allow one to map the hadronic structure in a three-dimensional momentum space, exploring all the possible spin and momentum correlations between a hadron and its elementary constituents. I will discuss their predictive power as a function of the kinematics and, in particular, I will show that the flavor structure of the TMDs can have an impact on the determination of the W boson mass at the Large Hadron Collider, providing a new connection between 3D hadron tomography and high-energy physics.