It will be the first time that the two shows air live together, although fortunately for us viewers they won't clash.
All eyes will no doubt be on the ratings reports on Sunday morning to see which attracted the most viewers, and bookies reckon Simon Cowell will be happy.
The news that One Direction will be appearing on Saturday night's instalment has seen the odds of an Factor win slashed.
The X Factor is 1/2 to have the highest number of peak viewers and beat Strictly Come Dancing on Saturday night’s ratings war with the BBC show at 6/4 with William Hill.
“Despite the Olympic bandwagon rolling onto Strictly Come Dancing, the X Factor are favourites to overcome the BBC show this week,” said William Hill spokesman Rupert Adams.
However we think it will be a clear win for Strictly in the ratings.
The new series launched to it hits highest ever ratings for its pre-recorded red carpet show last month, putting it on a good course to easily achieve over 10 million viewers this weekend.
However The X Factor has been experiencing its lowest ratings for years, with some shows down to levels not seen since 2007.
With the singing contestant yet to break the 10 million barrier, it's going to be tough challenge to beat Strictly.