On 29 January 2017, in the men's singles final of the Australian Open, the 35-year-old Federer won five sets and defeated Spain's Nadal 3:2 to win the fifth Australian Open title - the 18th grand slam trophy in his career.

If he doesn't play tennis, Federer could be a good footballer. (keystone)
Speaking of Federer, I believe he is the only Swiss known to many Chinese, and as the world's top tennis player, he is probably also the most well-known Swiss. He is also a product endorsement advertiser and a father of two pairs of twins, and many fans regard him as the "god of tennis"... But, do you know, how many cows are Federer? How old is his daughter-in-law? Is he only half Swiss?
Below we tell you most of his 11 estimates that you don't know.
1. Federer is only half Swiss
Federer's father, Robbie Federer, is a native of German-speaking Switzerland, and his mother, Lynnette, is from South Africa, known as the "Rainbow Country", so Federer is a dual national, holding two passports, one Swiss passport and one South African passport, Federer's name "Roger" should come from the English pronunciation of roger (Roger).
2. Female juniors hold gold bricks
Federer and his wife Mirka's love affair began in 2000, when they both represented Switzerland at the Sydney Summer Olympics. Federer confessed to Milka at that time, when Milka was 21 and Federer was 18. Originally from Slovakia, Milka came to live with her parents in Switzerland at the age of two. Federer says a big part of his success is due to Milka. At the time of his encounter with Milka, Federer had not yet won any titles.
3. The Federer family has three pairs of twins
Federer and Mirka already have two pairs of twins, a twin daughter and a pair of twin sons. But, you know what? Federer's sister Diana Federer also had twins. So many twins appear in one family at the same time, presumably because of genes.
4. A person with hundreds of nicknames and nicknames
No celebrity in the world of sports has more nicknames and nicknames than Federer's: fedi (short for federer), swiss maestro (Swiss master), fed express (Swiss express), king federer (Fei Tian wang), ihre hoheit (his highness), Swiss conductor, hot dog king, fei shen... And so on, and so on. His father called him Rotschi, and his wife, Mirka, affectionately called him bebeli.
In China, fans call him "Cow Cow", and his fans naturally become "milk powder". Federer got this nickname, and there's a story about it, which is just a version of his "cow" nickname:
5. Cows as a gift: two
In 2003 Federer won the Wimbledon Grand Slam title for the first time, and then participated in the Swiss Open in Gstaad, the organizing committee held a grand celebration ceremony for Federer Wimbledon and gave Federer an 800 kg yellow and white cow and a milking worker's outfit, Federer named the cow "Juliette".
Years later, federer was asked what happened to Federer's cow, and Federer said that the cow later gave birth to a calf, and the calf gave birth to a calf, but it was slaughtered in 2005 because the milk production was not up to standard.
In 2015, Federer made his debut at the Swiss Open again, and the tournament organization once again presented Federer with a horned cow , désirée .
6. With regard to wage equality between men and women
In tennis, women's income has always been lower than men's. Federer has said many times that this is right, no problem. The reason is that women play on the court for less time than men, women's tennis matches are all three-set best-of-three, and many men's tennis are five-set best-of-three (Grand Slam), so women have shorter "working hours", so their income should be lower than that of men. (Unique logic!) )
7. Vegetarians
Federer was a vegetarian until the age of 14, for reasons that are not clear, but he is still tall (185cm) and strong. According to his own account, he now eats everything.
8. Once upon a time it was possible to become a footballer
We know that Federer is a big fan of Basel football. If he had chosen football in the first place, the all-rounder might have become a professional footballer. As a child, he was the highest-caliber player in Basel F.C. Farmers' concordia basel. His coach later mentioned him, saying, "He used to be the best."
9. Popular portraits
Federer not only received two cows as gifts, but also two stamps. In 2007, he was honored as a special stamp figure by a living celebrity, and later, in Austria, in 2010, Federer's portrait was also affixed to the upper right corner of the envelope.
10. All Roads Lead to "Roger"
You wouldn't have guessed that Federer had two streets named after him. One is the "roger-federer-allee" route from Biel to the centre of Swiss tennis affairs. Another one is hilarious: in fact, "Roger Federer Lane" existed before, a road in Halle, Germany, leading to the tennis court roger-federer-allee.
11. No military service (this is an incredible thing in Switzerland)
There was also something almost inconceivable to the Swiss: Federer had not performed military service, supposedly because of his feet. The minister of defence at the time, Schmid, had guaranteed that he would have to perform civil service (in Switzerland, male citizens must perform military service, and if they are unable to perform military service for special reasons, they must be replaced by civilian service or other means). However, always because the time was always right, he never served civil service. However, under Swiss law, Federer was required to pay to the state 3 percent of his income exempt from military service tax each year until his 30th birthday.
Federer his people
Federer was born on 8 August 1981 in the town of Binningen in the semi-canton of Basel Countryside, and spent his childhood in the neighbouring town of Münchenstein. Federer speaks German, English and French. Swiss German was his native language, although his mother did not speak Swiss German. Playing jassen, cricket, and table tennis are Federer's hobbies. Federer started playing at the age of 3 and joined the tennis club at the age of 8. In 1995, at the age of 14, Federer became a Swiss junior tennis champion, won the Wimbledon Junior Men's Singles Title at the age of 16, and became a professional in July 1998. Federer's biggest breakthrough came in 2001, when he defeated seven-time champion Pete Sampras in the quarter-finals at Wimbledon, the only time Federer played Sampras. Since then, Federer's ranking in the tennis world rankings has been soaring. An important breakthrough was the defeat of Mark Philippoussis in the 2003 Wimbledon final in straight sets, becoming the first Swiss to win a Grand Slam title. For many years it remained at the top of the world tennis scene. And Federer broke almost all of the records of modern tennis, and those records made him the greatest tennis player in history. His total number of weeks in the world number one is 302 weeks, and he is ranked number one in the world for 237 weeks in consecutive singles. Federer has won 18 Grand Slam titles so far. He is the only player to have won five consecutive titles in two Grand Slam tournaments (Wimbledon 2003-2007, US Open 2004-2008). Federer turned 35 on 8 August 2016, most of the players have retired at his age, and he still believes he can win another Wimbledon title. Although the dream of an 8th Wimbledon title has not yet been achieved, Federer today (unexpectedly) lifted the Australian Open trophy again - the 18th Grand Slam title trophy.
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