Cardinals outfielder Jordan Walker tweaked his knee while stepping on a sprinkler head and was forced out of game action and had imaging done on the knee. Luckily, it came back wi

St. Louis Cardinals right fielder Jordan Walker will miss at least a week after sustaining a minor knee injury when he stepped on a sprinkler head in a spring training game. Walker, 22, was running down a fly ball against the Washington Nationals on Tuesday when he was injured.