The forward, who has played as a central striker for his country over the past couple of weeks, netted his second career treble in their 7-1 U21 EURO qualifier win over Switzerland.
Our number 11 scored his sixth, seventh, and eighth goals of their qualifying campaign as France made it a final game to remember, after securing a place at next summer’s tournament in Albania and Serbia with a win last Saturday.
Mathys opened the scoring ten minutes into proceedings, before adding a second with five minutes to go in the first half by lofting the ball over Swiss goalkeeper Silas Huber inside the penalty area.
The 21-year-old, who captained Les Bleuets in Orleans, made it a hat-trick in the 59th minute, curling an effort past Huber from just outside the 18-yard box.
Archie Gray and England’s Under-21s side also played the final game of their qualification campaign for June’s European Championship.
The Young Lions, who like France, confirmed their spot in the tournament last weekend, finished off with a 3-1 defeat to the Republic of Ireland in Cork.
Earlier in the day, Uruguay and Rodrigo Bentancur ended their international break on a high, beating India 6-1 in a friendly in Kolkata.
Diego Forlan’s side got out to an early lead with Darwin Nunez opening the scoring from the spot 11 minutes in, but Anirudh Thapa levelled proceedings after 22 minutes.
Five minutes later, the game was suspended due to adverse weather conditions. Maxi Araujo scored very shortly after the resumption of play, and added another 59 minutes in.
His Sporting teammate Rodrigo Zalazar was also on the scoresheet, as were Juan Sanabria and Rodrigo Aguirre.
In the UEFA Nations League, Andy Robertson’s Scotland failed to make it back-to-back wins under new manager Sebastien Pocognoli, falling to a 2-1 defeat to Slovenia.
Ryan Christie gave Scotland the lead after 31 minutes, but second-half goals from Aljosa Matko and Danijel Sturm powered the visitors to a come-from-behind victory at Hampden Park.
Before the game, Andy was presented with a framed shirt to commemorate the 100th cap that he picked up in their Nations League B clash with North Macedonia last Saturday.
The left back is now just one appearance away from equalling Kenny Dalglish’s all-time appearance record (102), which has stood since 1986.
In Nations League C, Martin Dubravka watched from the bench as Slovakia were 4-0 winners in Moldova, while at Wembley, Antonin Kinsky was an unused substitute as Czechia were defeated by England in Nations League A.
Spurs legend Harry Kane scored twice in a 3-0 win for the Three Lions, with our academy graduate making history by equalling Peter Shilton's record of 125 England caps, which was set in 1990.
Finally, Spurs great Heung-Min Son became South Korea’s all-time top goalscorer, scoring for the 59th time for his country in a 2-0 friendly win over Uzbekistan.