President Bush feigned a sore shoulder on Friday after throwing out the ceremonial first pitch at the Washington Nationals' (search) baseball game here, a matchup with the Arizona Diamondbacks that marked the national pastime's return to the nation's capital after 34 years.

For the benefit of reporters and photographers standing on the South Lawn, Bush playfully swung his right arm around and grimaced to indicate stiffness as he walked to Marine One on his way to a Social Security event in Ohio.

When he spotted Arizona Diamondbacks' outfielder Luis Gonzalez (search) watching the departure with his wife and two children, the president dashed over to chat.

"He didn't bounce it so it was good," Gonzalez said of Bush's pitch. "You never want to bounce it."

After a hasty windup, Bush, who was a part-owner of the Texas Rangers before running for governor of Texas, released the baseball, which sailed high and wide of the strike zone before being snatched by Nationals catcher Brian Schneider.

Bush's pitch came 95 years to the day after President William Howard Taft did the same at a game between the Senators and Athletics, the beginning of a tradition. The Nationals 5-3 victory over the Diamondbacks Thursday night left the Nationals alone atop the National League East with a 6-4 record.