By Chris Oddo | Friday February 16, 2018

Roger Federer becomes he oldest No.1 in ATP history and the internet went nuts. Should we be surprised? Here are the best reactions we found on Twitter.

1. The race is run—for now.

Roger Federer being back at No.1 has got us feeling all retro...😉🎮@rogerfederer pic.twitter.com/BiwJMr4aeo

— Tennis TV (@TennisTV) February 16, 2018

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2. The ATP owes Roger a lot.

For the first time in a long time, welcome back to the top @rogerfederer 🙌 pic.twitter.com/qjqmxwmSj5

— ATP World Tour (@ATPWorldTour) February 16, 2018

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3. Roger then, Roger now. Roger that.

How things can change... 🖼️ February 2018 ⬅️February 1999#abnamrowtt pic.twitter.com/XMESzMneI3

— ABN AMRO WTT (@abnamrowtt) February 16, 2018

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4. There were more tears in Australia but any cry is a good cry.

Tears of joy.@rogerfederer #abnamrowtt pic.twitter.com/4wXctIkT99

— Tennis TV (@TennisTV) February 16, 2018

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5. The longest gap between stints at No.1—ever.

Longest gaps between stints at No.1 on the @ATPWorldTour

(stats via @ATPMediaInfo, 📸: @Sport360) pic.twitter.com/LmI9kjdVKJ

— Reem Abulleil (@ReemAbulleil) February 16, 2018

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6. Special times, special photo.

When you realize you've achieved something spectacular 👏👏👏... #RFontopofthe🌍#abnamrowtt pic.twitter.com/ayQfgUU7n8

— ABN AMRO WTT (@abnamrowtt) February 16, 2018

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7. Some love from Mercedes

Congratulations @rogerfederer, and welcome back to the top of the world. #NumberOne #RotterdamOpen pic.twitter.com/L0YJZeatR9

— Mercedes-Benz USAㅤ (@MBUSA) February 16, 2018

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8. When you impress the legends you know you are good.

Back to where he belongs at world number #1. 👏🏼 Congratulations @RogerFederer 🎾1⃣🔝 https://t.co/QJiOP8A44T

— Mesut Özil (@MesutOzil1088) February 16, 2018

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9. Age is just a number until you know you are No.1. Like that.

Age is just a number until you’re number one. @rogerfederer pic.twitter.com/Dg4T8JakAN

— Nike (@Nike) February 16, 2018

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10. This is spectacular.

#RotterdamOpen pic.twitter.com/RIigPexVU3

— Christophe Bertschy (@SwissMinipeople) February 16, 2018

2004, 2009, 2012 and now 2018.@rogerfederer tops the world rankings for the fourth time in his career, and becomes the oldest singles No.1 ever 🌍 #Wimbledon pic.twitter.com/HawyVGHIoA

— Wimbledon (@Wimbledon) February 16, 2018

36 years 195 days...@RogerFederer continues to raise the bar in our sport. Congratulations on yet another remarkable achievement!!

— Andre Agassi (@AndreAgassi) February 16, 2018

@rogerfederer continues writing history!!! #goat @ATPWorldTour

— Boris Becker (@TheBorisBecker) February 16, 2018

#1 pic.twitter.com/NUkw9D9sWm

— Wilson Tennis (@WilsonTennis) February 16, 2018

"It's a dream come true. I can't believe it." - @RogerFederer

Federer is honored for returning to World No.1 pic.twitter.com/oPiGMAmPzn

— Tennis Channel (@TennisChannel) February 16, 2018

Roger Federer is the oldest-ever ATP #1 one year after Serena Williams made history as oldest-ever WTA #1. Quite an era for this sport.

— Ben Rothenberg (@BenRothenberg) February 16, 2018

Roger Federer signs blockbuster sponsorship extension with Mercedes-Benz https://t.co/fdOQiOgfvI pic.twitter.com/WzHuE9y2ju

— Forbes (@Forbes) February 16, 2018

Back at One! @RogerFederer wins #ABNAMROWTT QF to ensure return to World No. 1 in Monday's @ATPWorldTour Rankings. Federer will set or extend records for:
- Most Weeks at No. 1 (303)
- Oldest No. 1 (36)
- Years Since Debut at No. 1 (14)
- Years Between Stints at No. 1 (5)

— ATP Media Info (@ATPMediaInfo) February 16, 2018