  The latest results on top quark physics, namely single top quark production
cross sections, $W$-boson helicity and asymmetry measurements are used to probe
the Lorentz structure of the $Wtb$ vertex. The increase of sensitivity to new
anomalous physics contributions to the top quark sector of the Standard Model
is quantified by combining the relevant results from Tevatron and the Large
Hadron Collider. The results show that combining an increasing set of available
precision measurements in the search for new physics phenomena beyond the
Standard Model leads to significant sensitivity improvements, especially when
compared with the current expectation for the High Luminosity run at the LHC.
