Baylor was dealt an early-season blow on Monday as running back Johnny Jefferson was ruled out for "a while" by interim head coach Jim Grobe at practice.Click here to view the tweet on your mobile app.Jefferson rushed for exactly 1,000 last season, capped off by a breakout 299-yard, three-touchdown performance in the bowl game against North Carolina with starter Shock Linwood out with an injury.It should be noted that Jefferson's foot injury was not the result of the car accident that hurt his ribs.