KANSAS CITY, Mo. — The Kansas City Chiefs and Miami Dolphins played in the fourth-coldest game in NFL history on Saturday night, with a kickoff temperature of minus-4 and wind chill of 27 below zero. The more motivated team, though, was evident from the start. Kansas City’s offense was efficient, while the defense held down an explosive Miami offense throughout as the Chiefs took a 26-7 wild-card home victory in the NFL playoffs. There were plenty of standouts. Quarterback Patrick Mahomes added to his sparkling postseason résumé, throwing for 262 yards with a pair of scrambles in critical situ…