"Washington Redskins quarterback John Beck split first-team practice repetitions with Rex Grossman in preparation for Sunday's game against the Miami Dolphins, a source with knowledge of the situation confirmed Saturday.

It's a sign that coach Mike Shanahan is losing patience with Beck, who has lost all three of his starts. Shanahan customarily gives his starting quarterback all of the first-team reps, while the backup takes all of the scout team offense's snaps. But this new arrangement, which was first reported by the Washington Post, gives Shanahan some flexibility at quarterback Sunday as the Redskins try to break out of a major offensive slump and end their four-game losing streak.

Shanahan did not say during the week which quarterback he plans to start against the Dolphins."