Roger, Rafa, Novak or Serena: whose shot at history is most notable?

No matter where you look, history is on the horizon at this year's French Open. But what accomplishment on the terre battue would be the most impressive of them all? Look over these four legendary objectives, and let us know your answer in the poll below.

1. Ten years after completing the career Grand Slam at Roland Garros, Roger Federer wins his second French Open title for a 21st major

The 37-year-old is playing in his first French Open in four years, but you wouldn't know it based on his play so far. Paris has been the one place where he's never been the favorite to win. It would just make the victory that much sweeter.

2. Novak Djokovic wins his second French Open to reach 16 career majors, and complete the "Novak Slam" for a second time

The world No. 1 won Madrid and reached the final in Rome prior to setting foot in Paris. The winner of the past three Grand Slam events, Djokovic has shown few signs of letting up in his first two matches. A second Roland Garros title would make Djokovic the first man in the Open Era to twice hold all four majors simultaneously.

3. Rafael Nadal wins his 12th French Open in 15 years—doubling Bjorn Borg's total—capturing an 18th career major title

Although Djokovic has looked superb, Nadal is the player who slowed down the Serb a couple weeks ago in Rome. Nadal is peaking at the right time and improved to 89-2 at Roland Garros with his four-set win over David Goffin on Friday.

4. Serena Williams wins her fourth Roland Garros title, and first major as a mother, tying Margaret Court for the all-time Grand Slam singles title total

Serena has faced many injuries this season, limiting her time on court. With only one clay-court match under her belt, the 37-year-old faced her fair share of doubters coming in, and was not the oddsmakers' favorite to win. Williams doesn't have the easiest path to victory but should never be counted out on the Grand Slam stage, especially with a record-tying 24th major title at stake.