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Andreas Seppi

Another Federer milestone: Win No. 300 at a Grand Slam

The countless records and accolades accumulated over a long and illustrious career don't in any way diminish Roger Federer's satisfaction when he sets yet another benchmark.

Federer became the first man to win 300 Grand Slam singles matches when he beat Grigor Dimitrov, a player formerly dubbed "baby Fed" for the likeness of their styles, in the third round of the Australian Open on Friday.

The 34-year-old Federer already tops many "most of" lists in men's tennis — from the number of major titles won (17) to the number of consecutive Grand Slam tournaments contested (65). Yet he still gets a thrill from the numbers.

"It's very...