Casey Stengel of the Detroit Tigers hit the first home run in Yankee Stadium (the house that Ruth built) as by definition, an in-the-park home run is a hit that sends a batter (with no fielding errors) from home plate, around the bases and back to home plate.
Jorge Posada was the first player to hit a home run in the new Yankee Stadium, completed in 2009.
Jorge Posada hit the first home run in Yankee Stadium II. Posada hit the home run in the 5th inning, off Cleveland Indians pitcher Cliff Lee over the center field wall on April 16, 2009.
Robinson Cano hit the first home run at the "new" Yankee Stadium in an exhibition game played against the Chicago Cubs on April 3, 2009.
Carl Rose
Who cares Manny blows!
Mulder was the first pitcher to hit a home run at the new Busch stadium!
On April 10, 1971, Don Money of the Philadelphia Phillies hit the first home run in Veterans Stadium.
The Dodgers moved to Dodgers Stadium in 1962. The first home run hit by a Dodger there was by Jim Gilliam off Moe Drabowsky of the Cincinnati Reds in the third inning of the game played April 11, 1962. The Dodgers won the game 6-2. It was the second game ever played at Dodger Stadium. The first home run ever hit at Dodgers Stadium was by Wally Post of the Reds the day before, April 10, 1962.
Griffey
Willie Stargell is the only person to ever hit two home runs out of Dodger Stadium. His first was a 506 foot bomb off of pitcher Alan Foster on August 5th 1969, and the other was a 470 foot shot off of Andy Messersmith on May 8th 1973. It wasn't for over 30 years before Mike Piazza became the second player and only Dodger to ever hit a home run out of the park. On September 21st 1997, Mike Piazza hit a 478 foot home run off of San Francisco Giant pitcher Mike Lansing. July 17th 1998, Mark McGwire hit the longest home run at 511 ft over the right field pavilion at Dodger Stadium against pitcher Brian Bohanon. Manny hit one in 2009, don't know the details. (LOL) (BROKE A WINDSHIELD)
Rick Reichardt
a male
Jack Wilson was the first Pittsburgh Piate to hit a home run at Yankee Stadium on June 15, 2005.
Eric Young, in the first ever at bat by a Rockie at the stadium.
Me