David Lynn failed to repeat his heroics of Thursday when he carded a four-under-par 68 to lead the Masters.
The Englishman, 39, made only one birdie, on the 18th, in a one-over-par 73 in the second round and is three under overall.
"I was just grinding out the pars," said the 39-year-old. "I actually had quite a few chances on the back nine, so to finally finish with a birdie I hit a fantastic shot into the last to about six feet.
"As we can see by the numbers on the scoreboard, nobody is running away with it, so boring is good."