Sport at its best is defined not by one performer but two, by a rivalry which elevates and inspires both participants. John McEnroe was left distraught when Björn Borg walked away from tennis: Ayrton Senna repeatedly tried to persuade Alain Prost to reverse his decision to retire.
So amidst all the hoopla about leaving Liverpool at the end of the season, spare a thought for . For eight seasons — Klopp arrived at Anfield in October 2015, Guardiola joined Manchester City in August 2016 — they have been the standout managers in
