Sports photos of the week, Jan. 12

It was definitely a week to remember in the wide world of sports.

Stateside, baseball's Hall of Fame opened its doors to a new crop of the game's greatest stars and the NFL postseason took it up to a whole new level after some playoff bouts became instant classics.

Around the globe, Roger Federer played undoubtedly one of the most difficult tennis matches the world has ever seen, while Roma's Francesco Totti celebrated a crucial goal in the 'Derby della Capitale' with a selfie for the ages.

Sticking in the sphere of soccer, Olympique de Marseille contributed to the poignant showings of solidarity in the wake of France's recent terror attacks with a stirring "Je suis Charlie" tribute.

So, kick back and check out the coolest photos from the week that was in sports.

And, in case you missed it, catch up with last week's collection in the gallery below: