By Josh Liddick, Sports Talk Philly editor 
The Philadelphia 76ers officially know their Eastern Conference Semifinal opponent.
The second-seeded Boston Celtics, after claiming a Game 7 win over the Milwaukee Bucks 112-96, will host the Sixers on Monday night in Game 1 of the semis.
The Sixers and Celtics are long-time rivals, of course, with the last playoff meeting between the two teams coming in 2012, when Boston took down Philadelphia in the semi-final series in seven games.
The Sixers haven't played a game since Tuesday night, when they beat the Miami Heat to win the series in five games. It's been quite a lay-off between series for the Sixers, as the Celtics will only get one day of rest before starting their next journey.
Boston hosts the first two games of the series, before the series shifts back to Philly for Games 3 and 4.
While the Sixers are the lower seed, they aren't plagued with injuries like the Celtics are. The Celtics barely made it past a first round series against a healthy seventh seed in the Bucks.
The Atlantic Division rivals have played four times this season with the Celtics coming out on top three times, including a game in London in January.
