TAMPA - The Washington Redskins put together their first unbeaten preseason in 28 years without Robert Griffin III even taking a snap.
Griffin then tweeted Thursday night that he will be under center when the regular season opens for Washington on Sept. 9, but coach Mike Shanahan hedged after the 30-12 victory over Tampa Bay.
Fourth-stringer Pat White threw for 181 yards, set up a touchdown with a 66-yard completion to Dezmon Briscoe, and also ran for a TD to help the Redskins finish the preseason 4-0.
Shanahan rested most of his starters, including Griffin, who worked out at Raymond James Stadium for about 30 minutes before walking off the field with Dr. James Andrews. Andrews was in town to examine the quarterback's surgically repaired right knee.
Griffin, who's been practicing without any reported setbacks, participated in the coin toss as a Redskins captain and watched the game from the sideline. When it ended, he tweeted: "Operation Patience complete: cleared."
But Shanahan said he needed to discuss some "concerns" with Andrews and Griffin and would make a decision Monday about whether the 2012 Offensive Rookie of the Year will start against Philadelphia.
Tampa Bay quarterback Josh Freeman also sat out the finale, as did Bucs cornerback Darrelle Revis, who's recovering from knee surgery that sidelined him most of last season with the New York Jets.
With backup Kirk Cousins out with a sprained right foot, White played the entire game for the Redskins.
Safety Brandon Meriweather started and played the opening half for Washington, seeing his first game action since November, when he tore the anterior cruciate ligament in his right knee during the only game he played. The Redskins are counting on him to shore up a weakness in their secondary.
Evan Royster rushed for 59 yards and a touchdown in his bid to win a job as a backup running back. Another young running back vying to make the roster, rookie Chris Thompson, scored on a 69-yard punt return.
Tampa Bay (1-3) finished a mostly unimpressive preseason with another sloppy performance.
With a healthy Freeman looking ahead to the Bucs' season opener against the Jets, third-round draft pick Mike Glennon played like a rookie in completing 7 of 16 passes for 63 yards and one interception. He also lost a fumble when the ball appeared to just slip out of his hand before his arm began moving forward to throw.
Linebacker Najee Goode scored Tampa Bay's first touchdown, returning a second-quarter interception 37 yards. Derek Dimke missed the extra point, hitting the right upright -- one of several sloppy moments for the Bucs, who turned the ball over twice while falling behind 27-6 at the half.
Dan Orlovsky replaced Glennon late in the third quarter and led a field goal drive for Tampa Bay, which sputtered offensively throughout the preseason.
In three exhibitions, Freeman was 12 of 26 passing for 101 yards, no touchdowns and no interceptions. He was sacked nine times.