By Frankie Taddeo A best bet and analysis for Thursday’s AFC West showdown between the Chiefs and Chargers. Week 2 kicks off Thursday Night when Patrick Mahomes and the Chiefs host Justin Herbert and the Chargers with first place in the AFC West on the line. Mahomes, who threw for five touchdowns in a blowout win over the Cardinals, is now tied with Josh Allen at SI Sportsbook for the best MVP odds (+500). The Chargers will be without receiver Keenan Allen (hamstring) but will look to continue their recent dominance at Arrowhead Stadium. Since Herbert’s debut, Los Angeles is 3-0-1 against the …