1. First within reach: The Orioles are back in Baltimore for an 11-game homestand that could define their season. They open a four-game series against the Tampa Bay Rays tonight, before playing a four-game series against the Boston Red Sox beginning Monday and wrapping their home schedule with a three-game series against the Arizona Diamondbacks. The Orioles remain one of the best home teams in baseball, at 45-22 there this season. The sheen has worn off a little, as the Orioles have lost nine of their past 15 games at home. But the Orioles enter tonight coming off a 6-3 road trip, trailing the Red Sox by one game for first place in the American League East. They lead the Toronto Blue Jays by one game, and the Detroit Tigers and Seattle Mariners by 2 1/2 games in the wild-card race.