Saturday was a grand day for baseball. Not only was there the first no-hitter of the season, but the day saw seven players hit grand slams. Grand Slam Home Run - A type of home run that occurs when the bases are loaded and the batter with his home run brings in all the See all MLB stats. It's officially the grandest day in Major League Baseball history. In the shadow of Albert Pujols' th career home run, the first grand slam to.