Keagen Trost, a rookie selected in the third round by the Rams, left the preseason game against the Chiefs early due to a hamstring injury. He will not return to the game, although the full extent of the injury is still unclear. It is uncertain whether he will miss any regular-season games.
Trost was expected to bolster the offensive line for veteran quarterback Matthew Stafford, who is 38 years old. With Trost sidelined, Warren McClendon, the regular-season starter, will likely split time at right tackle with Bryce Henderson for the remainder of the game against Kansas City.
Source: cbssports.com.