it was in April, 2011.
Miller park. Home of the Brewers.
The Pirates home opener will be on April 7, 2011 versus the Colorado Rockies.
You might try contracting him by sending a letter to where the Brewers play their home games, Miller Park: Prince Fielder c/o Miller Park 1 Brewers Way Milwaukee, WI 53214
The Milwaukee Brewers began playing in 1970 and they called Milwaukee County Stadium their home through the 2000 season. In 2001, Miller Park opened and that is currently where the team plays their home games.
On June 11, 2011, there were three home runs hit during the Milwaukee Brewers game. Prince Fielder and Rickie Weeks hit home runs for the Brewers and Lance Berkman hit one for the St. Louis Cardinals.
In 2011, opening day for the Houston Astros was on April 1st in Philadelphia. Their home opener was on April 8th.
For the 2010 season, their home open was April 5th, against the Los Angeles Dodgers.
On July 4, 2011, Milwaukee Brewers pitcher, Shaun Marcum, hit a grand slam against the Arizona Diamondbacks. It was his first Major League home run.
1 by Prince Fielder in the 6th inning.
Jeromy Burnitz off of Scott Sullivan in the first regular season game played at Miller Park, against the Cincinnati Reds on April 6, 2001.
Corey Hart of the Brewers in the third inning of the first 2009 regular season game played at Miller Park, against the Cubs, on April 10.
Russel Branyon hit the longest one at Miller Park. I'm not sure about away games though.