21-year-old has begun the last day of the hallowed tournament after setting a scoring record for 54 holes of 16 under par .
he is playing alongside british contender justin rose in the final , showcase pairing , and will be looking to avoid the disappointment of last year .
spieth , who squandered a front-nine masters lead on sunday , joining craig wood in 1941 , arnold palmer in 1960 , jack nicklaus in 1972 and ray floyud in 1976 .