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1. Happiness is Success: Our Story in a Different Version by Gruszki

   Fandoms: Tennis RPF  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Work in Progress

   02 Aug 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Carlos Alcaraz/Jannik Sinner
   • Carlos Alcaraz & Jannik Sinner
   • Carlos Alcaraz
   • Jannik Sinner
   • Original Child Character(s)
   • Original Female Character(s)
   • Original Male Character(s)
   • Parallel Universes
   • Age Difference
   • Mpreg | Male Pregnancy
   • Same-Sex Marriage
   • Childhood Sweethearts
   • Angst with a Happy Ending
   • Bottom Carlos Alcaraz
   • Top Jannik Sinner

   Summary

   As soon as Carlos is back on the court, three things are easy to notice.
   First, he still needs time to get back to his prime. Second, a strange man starts showing up in his box. Third, he stops talking about Jannik as much as he used to.
   OR
   Jannik at forty-four comes to a world where he and his childhood sweetheart Charly are depicted as the biggest rivals. As the tournament goes on, he finds their relationship is not as simple as it appears to the public.
   At the same time, however, Carlos is also beginning to unveil some old memories about the two counterparts of himself and Jannik.
   Four people. Two worlds. One story.

   Series

   • Part 1 of sincaraz

   Language:

   English

   Words:

   27,595

   Chapters:

   4/8

   Comments:

   27

   Kudos:

   66

   Bookmarks:

   5

   Hits:

   947