drivers in the final race that are still eligible for the season title are called the "Championship 4". Starting with the 2017 season, NASCAR abandoned the term "Chase", instead calling its final series the "playoffs". Rugby league National Rugby League Play-offs are used to decide the premiers of the National Rugby League (NRL) in Australasia, where they are known as finals (also as semi-finals or semis) – as in Australian rules football, the participating teams only come from within a single division, and the tournament is staged as single matches rather than a series. Currently, in the NRL, eight teams qualify for the finals; starting with the 2012 season, the system was changed from the McIntyre final eight to the same system used by the AFL. Previously, the term play-off was used in the NSWRL competition to describe matches which were played as tie breakers to determine qualification for the finals series. Since 1995, points differential decides finals' qualification and play-offs are no longer held. Super League The Super League rugby league competition has used a play-off system to decide its champion since 1998. The original play-off format featured the top five highest-ranked teams after the regular season rounds. Starting in 2002, the play-offs added an extra spot to allow the top six to qualify. With the addition of two new teams for the 2009 season, the play-offs expanded to eight teams. The next format, scrapped after the 2014 season, worked as follows: Week One Qualifying play-off 1: 1st vs 4th (winner receives a bye to week three) Qualifying play-off 2: 2nd vs 3rd (winner receives a bye to week three) Elimination play-off 1: 5th vs 8th (loser goes out) Elimination play-off 2: 6th vs 7th (loser goes out) Week Two Preliminary Semi-Final 1: QPO 1 Loser vs EPO 1 Winner Preliminary Semi-Final 2: QPO 2 Loser vs EPO 2 Winner Week Three Qualifying Semi-Final 1: QPO 1 Winner vs PSF 1 or PSF 2 Winner * Qualifying Semi-Final 2: QPO 2 Winner vs PSF 1 or PSF 2 Winner * Week Four Grand Final: Winners of Qualifying Semi-Finals meet at Old Trafford ''* Opponents decided by the QPO winner (in Week 1) that finished higher in the regular season Beginning in 2015, the Super League season was radically reorganised, and more closely integrated with that of the second-level Championship. Following a home-and-away season of 22 matches, the top eight