Federer and Records at 2013 Australian Open
If he wins his first round match, he will have the all time record for most grand slam match wins on a hard court with 128.
If he reaches the quarterfinals, he will join Jimmy Connors as the only players to reach at least 10 quarterfinals at a Grand Slam at two different Grand Slams.
If he reaches the semifinals, he will join Jimmy Connors and Andre Agassi as the only players to reach at least 10 semifinals at a Grand Slam. Only Connors and Federer will have reached 10 or more consecutive semifinals at a Grand Slam.
If he reaches the finals, he will tie Lendl and Sampras for most consecutive years of reaching at least one grand slam final in a year. If he reaches the finals, he will have reached at least 6 finals at a grand slam at three different Grand Slams. (Lendl and Borg are the only players to have reached at least 4 finals at a grand slam at three different Grand Slams.)
If he wins, he will have won at least 5 championships at 3 different grand slams (remarkably, no other player has even won at least 3 championships at 3 different Grand Slams)
If he wins, he will tie Sampras for most different years of winning a grand slam in a year with 10.