EUGENE -- Jenn Suhr tightened her grip on American pole vaulting Sunday by winning her 10th U.S. outdoor title at the Olympic track and field trials at Hayward Field.

Suhr won with a jump of 15 feet, 9 inches, and leads the U.S. delegation of Sandi Morris and Alexis Weeks to the Rio Olympics. Morris, who won the indoor U.S. championship in March over Suhr in an upset, jumped 15-7, and Weeks, an Arkansas freshman who won the NCAA championship, finished third with a lifetime best of 15-5.

This is Suhr's third consecutive Olympic trials title, and she will be chasing her second straight Olympic gold medal in Rio. Suhr owns the American record indoors and out, and the world indoor record, at 16-6.

Morris followed her U.S. title with a silver at March's indoor world championships held in Portland. She suffered a hairline fracture in a wrist seven weeks ago, she said, which limited her training -- but not enough to keep her from Rio.

-- Andrew Greif

agreif@oregonian.com

@andrewgreif