WASHINGTON (Reuters) - High-priced Washington Redskins defensive tackle Albert Haynesworth failed his second conditioning test in as many days on Friday and was again held out of practice, the team said.

Haynesworth is the only Redskins player required to take the conditioning test because he participated in less than 50 percent of off-season work as team rules require.

"He may not know it at this time but I can guarantee you the big linemen, the big guys I've been with that are in the trenches, need to be in shape."

The two-time Pro-Bowler signed a seven-year, $100 million contract in 2009 but has been feuding with the Redskins over a switch in defensive schemes.

He had hoped Washington would trade him and missed all but one day of the team's voluntary off-season programs and a mandatory minicamp.

The test requires Haynesworth to complete two sets of 300-yard sprints, which are broken down into 25-yard segments. The first set must be done in 70 seconds and the second, after a short break, in 73 seconds.

"Most people could do this test in their sleep," said Shanahan.

(Writing by Gene Cherry in Raleigh, North Carolina; Editing by Frank Pingue)