The group had already been worn down by a series of injuries.
He was affected by a series of injuries since 2004.
After a series of injuries, he decided to retire in 1974.
A series of injuries affected his running from 2007 to 2009.
At age 31, healthy for the past 16 months after a series of injuries, he is near peak form.
A series of injuries and other issues started to plague the team.
The 2006 season started slowly for him, as he fought against a series of injuries.
A series of injuries led him to retire from competition in 1970.
He retired from the professional tour in 2001 following a series of injuries during the late 1990s.
He was forced to retire in late 2007, due to another series of injuries.
