Bernard Tomic continued his inspired run of form to begin 2013 with a comfortable win over Florian Mayer. Mayer had won the first three encounters between the pair but never had it his way at all this time round, with the Australian youngster being dominant on serve. Tomic hit 14 aces and faced 0 break points on his way to a 7-6(4) 6-2 victory. Tomic had one break point in a first set with few chances for the returner but would fail to take it and have to settle for a tiebreak. At the change of ends, he found himself down 4-2 only to reel off five straight points to take the tie break and first set.
He made his move in the fifth game of the set, coming out on top of a lengthy Mayer service game to take the break at the third time of asking and would double his lead with the insurance break for 5-2. It wouldn’t be needed as Tomic served out at the first opportunity, holding to 30 to move on to the quarter final.
Ryan Harrison earned his first top 15 win against a wounded John Isner, defeating his fellow American 6-4 6-4. It would be Isner though who did much of the early pressing, having break chances in the sixth and eighth games of the set but failing to convert either of them. Isner would regret the missed opportunities as he was broken in the next game, allowing Harrison to then serve out for the set to 15. A break in the opening game of the second would pretty much wrap up the match, with the pair trading holds until the end with neither player even seeing as much as a deuce on return. After the match, Isner withdrew from the Australian Open due to the knee injury that had still been plaguing him since the Hopman Cup.