Alysia Montano was knocked off balance .
Alysia Montano was fell to the track while Martinez managed to stay on her feet , but was knocked out of rhythm to finish seventh in 2 : 06.63 , nearly four seconds behind sixth place .
Alysia Montano was knocked off balance and fell to the track while Martinez managed to stay on her feet , but was knocked out of rhythm to finish seventh in 2 : 06.63 , nearly four seconds behind sixth place .