The Formula 1 summer break came at the worst possible time for Mercedes. Toto Wolff’s team have won three out of the last four races and would have loved to continue that momentum after what they thought was a one-two finish at the Belgian Grand Prix. George Russell crossed the line first after a brilliant one-stop strategy and while Lewis Hamilton was frustrated not to have won the race originally, he was on hand to capitalise when Russell’s car was discovered to be underweight. Mercedes are currently 4 in the Constructors’ Championship and have a 100-point gap to close to catch McLaren let a…