BELMONT, Mich. — Defending champion Lexi Thompson fought through back pain Friday to take the second-round lead in the Meijer LPGA Classic.

“It just came on last weekend and it was really bad today,” Thompson said. “I’m not really one to complain about pain because I just fight through it, but yeah, it’s hurting. I’m going to go and get a rubdown and see if it goes away.”

The 21-year-old Thompson shot a 4-under 67, rebounding from bogeys on 15 and 16 with birdies on the final two holes to reach 10-under 132 at Blythefield.

“It was definitely important to come back from the two bogeys,” Thompson said. “I just hit a few errant drives there toward the end and made bogeys, but I played 17 and 18 well.”

Canada’s Alena Sharp bogeyed her final hole to drop into a tie for second at 9 under with South Korean players In Gee Chun, So Yeon Ryu and Q Baek. They all shot 67.

Thompson won the Honda LPGA Thailand in February for her seventh LPGA Tour title. The long-hitting Florida player, ranked fourth in the world, also won a Japan LPGA event last month.