Katie Boulter became the first player to win a deciding tiebreaker in the new format. (AP)

In a move similar to Wimbledon, the Australian Open introduced deciding tiebreakers to the final sets of all matches. In Melbourne though, the tiebreak will be played at 6-6 instead of 12-12.

For almost fifty years the US Open has played a tiebreak at 6-6 in the final set. So now, the French Open the only major to have no final-set tiebreaker. While some believe this is a good move to make matches quicker and potentially more interesting for audiences, many think it is the end of an epic marathon match era.

Katie Boulter became the first player to win an deciding 10-point tiebreaker when she beat Ekaterina Makarova for her first career Slam win, 6-0, 4-6, 7-6 (6). The young Brit actually forgot the new rules and thought she won when she reached seven, which made for an awkward moment. 

It'll take some getting used to.