champion was one over after the first round but five birdies in his second , including three in four holes on the front nine , saw him card a 68 and ensure he will still be in the running at the weekend .
the 58-year-old american is the third oldest man in the field in 2015 , behind tom watson -lrb- 65 -rrb- and ben crenshaw -lrb- 63 -rrb- , but showed excellent form to hit his first round in the 60s at augusta since 2001 .
mark o'meara carded a 68 on day two and ensured he will still be in the running at the weekend .