The Minnesota Vikings have painted a big 77 on their practice field in Mankato to honor Korey Stringer, the offensive tackle who died of heatstroke 10 years ago. Stringer died on Aug. 1, 2001, after collapsing on the field during a sweltering day of training camp. His death prompted teams across the NFL to more closely monitor their players during the long, hot practices of August. Read more: http://espn.go.com/nfl/story/_/id/6...s-honor-korey-stringer-10th-anniversary-death
