Jordan Spieth’s four-putt blunder gives some hope to distanced chasers

A shock blunder from Jordan Spieth gave the chasing pack hope after the defending champion had threatened to turn the Masters into a procession for the second year in a row.

Spieth, who was second on his debut in 2014 and claimed a first green jacket with a record-breaking wire-to-wire victory 12 months ago, held a two-shot lead after a flawless opening 66.