Matuidi has been solid for PSG this season.
Sunday night saw two of Ligue 1's best take the pitch in perhaps the biggest game of the season to date.
League leaders Olympique Lyon brought a three-point lead in the table to Paris. Lyon was coming off of a disappointing midweek draw that saw their lead drop from five to three points.
Paris Saint-Germain came in riding an impressive three-game run in which they finally shook off their individualistic tendencies to begin playing as a unit.
The home crowd was looking for their team to make a statement in this game, but Lyon were not going to go down without a fight.
With Thiago Silva keeping the back line mobilized in holding Lyon's attack in check, the midfield was more free to try and press the attack.
Neither team held a clear advantage possession-wise as things moved along. PSG finally made one count as former ASSE man Blaise Matuidi put the home side up as the first half came to an end.
It was much needed for the home side as they looked very passive for long stretches of the half. Matuidi was able to get onto the end of a deflected cross from Zlatan Ibrahimovic to head the ball home. Matuidi continued his impressive form as one of the few on the field who appeared to be into the game from the start.
PSG took more control of the game in the second half and created a handful of opportunities to put the game away. Unable to finish these chances kept the game in doubt.
Despite being unable to put the game away, PSG were able to make the single goal hold up to go back to the top of the table. Lyon looked very tired in the second half and time will tell what effect the missed opportunities of the past week will have on them.
As the smoke has cleared on this week of Ligue 1 action, we appear to have a three-team race towards the title between PSG, Lyon and Marseille. If PSG go on to claim the title, they may look back on the last week as the defining time of their season.