spieth held a two-shot lead after seven holes of the final round 12 months ago .
lead became a two-shot deficit as he bogeyed the eighth and ninth and bubba watson birdied the same holes , watson eventually going on to win his second green jacket in the space of three years .
spieth finished joint second with sweden 's jonas blixt and comes into this year 's event having won his second pga tour title in the valspar championship and finishing second in his next two tournaments .