It was a rough two-day stretch for the Dallas Cowboys on the offensive line. After Robert Jones broke a bone in his neck during Sunday's training camp practice, Tyler Guyton left the field Monday with a knee injury.

Cowboys left tackle Tyler Guyton was hurt during practice Monday, the second injury on Dallas' offensive line in as many days. According to multiple reports, Guyton has a broken bone in his right knee that will not require surgery and he could miss four to six weeks.