Federer hits ace. Calls his own serve out. Wins point anyway.

Thats just how world No. 1’s roll. pic.twitter.com/iRC5ORsjcd

— Ricky Dimon (@Dimonator) February 16, 2018

The definition of longevity…

2050 days ago, @rogerfederer became world No.1 for the third time in his career by winning the 2012 #Wimbledon final.

Today, at the age of 36, he could become the oldest player ever to top the singles rankings 😲 pic.twitter.com/1ksmw1BtTe

— Wimbledon (@Wimbledon) February 16, 2018

Not only has @rogerfederer become the oldest man to reach the world No.1 ranking but he has set a new record for the longest gap between periods at No.1, over five years. He will start his 303rd week at the top officially on Monday, a men's record.

— Craig Gabriel (@crosscourt1) February 16, 2018

36 years, 195 days. World No. 1. Again.

Roger Federer, the one and only. pic.twitter.com/3tL5lTwdQ4

— Gaspar Ribeiro Lança (@gasparlanca) February 16, 2018

If Federer beats Haase today, then on Monday, Feb 19
Total weeks as world No.1: 303
Oldest No.1 in men’s rankings history: Federer (36 yrs)
Longest gap between stints as No.1: Federer (5 yrs, 106 days)
Longest gap between first & most recent day as No.1: Federer (14 yrs, 17 days)

— Michal Samulski (@MichalSamulski) February 16, 2018

Well done Roger Federer hard work pays, New and Oldest world No 1.

— olamilekan (@olamiashraf) February 16, 2018

The new world No.1 Roger Federer … ahh it was nothing. pic.twitter.com/ofeAQJ2eJH

— Craig Gabriel (@crosscourt1) February 16, 2018

The GOAT… The Legend… The One and Only Roger Federer Becomes World No. 1… Again… @rogerfederer #OldestWorldNo.1 #TheGOAT pic.twitter.com/t3EsHYvbuT

— Prakhar Singh Taunk (@prakhar021991) February 16, 2018

The 🐐 back at world no 1 #RF20

— Buhari (@Buhari_Abdua) February 16, 2018

@rogerfederer is World No.1 again, i mean wow, this man is defying all odds and his age ♥️😇#Federer #WorldNo1

— Mridu ♡ (@mridujain01) February 16, 2018

Rare chance to rewrite History and @rogerfederer does the rarest by making all of it, oldest World No 1 #peRFect #ATPRotterdam @ATPWorldTour

— Arpit Shah (@arpitz246) February 16, 2018

For the fourth time in @rogerfederer’s career he will be world no. 1, holding the ranking for a combined record total of 302 weeks. On Monday he will break his own record.

Previous times RF has held #1:

Feb 2, 2004 (237 weeks)
July 6, 2009 (48 weeks)
July 9, 2012 (17 weeks) pic.twitter.com/WFxMHCkJzK

— 𝔸𝕊𝕀𝕄 | عَـاصِـمْ (@AsimJmail) February 16, 2018

There It Is.
Roger KING Federer becomes the Oldest Ever to become World No. 1 😉

— FTW 💯+3 (@IamIVK) February 16, 2018

The announcements from now on be like "Ladies and gentlemen, please welcome 20 times Grand Slam champion, your world No. 1, ROOOGER FEEEEDERER" 🙈🙈🙈😭😭😭🙈

— Yami (@Yamistic) February 16, 2018

FEDERER RETURNS TO THE TOP! WORLD NO.1 YESSSSSSSS!

— Ravi (@Rxvi_) February 16, 2018

Congratulations Rogerrrrrrrrrrrr @rogerfederer World No.1 I'm cryingggggg

— CA20L!N£ (@CaroFederista) February 16, 2018

They wanted to him to retire. They thought his best days are over. Say that again. At 36 years and 5 months, he becomes World No. 1 again! #RF1 pic.twitter.com/y1TCbR2kbq

— Moulin (@Moulinparikh) February 16, 2018

Say hello to the new ATP World No 1 @rogerfederer I love you so much Oldest but greatest World No 1,Tennis has never remained the same pic.twitter.com/e1zLJOhOTn

— Chef Karen Ekekwe (@HyperKiki) February 16, 2018

Look at him. He can't believe it. After 20 slams and 302 weeks at world no.1 it still means so much. Not just a number, a dream. Reward for perseverance. #RF1

— MB (@mbthecool19) February 16, 2018

Just as good a reason to celebrate Federer being oldest ever world no 1 in history of the sport is he has taken the record held by Serena Williams my celebrations begin #RotterdamOpen #ATP #wta

— Martyn Waller (@Martynw34) February 16, 2018