Stacy Lewis followed her 1-under first round with a 2-over 74 in the second round of the Women's British Open at Royal Birkdale Country Club.
The former Arkansas golfer is now 1-over for the tournament and tied for 16th.
If she had not made a double-bogey on the par-5 15th hole, Lewis would still be tied for sixth, as only six players have scores under par.
Despite the 15th hole, she is only seven shots off the lead, which is held by Mo Martin at 6-under. Martin is the No. 99 player in the world.