Thanks to my mate Gusbaldo for helping me modding players an testing the hole patch. And I'd Like to mention the modders that help me in some way to get this patch done with his ideas, previous patchs, animations, shadows, physics and courts: Sam, TE Production, Nico75, Wesley, Yiph2 and Scarecrow.
ATP 2004 Patch include:
_ ATP 2004 calendar
_ Tournaments Structures rebuild (5 sets in master series final e.g.)
_ Olympic games and Hophman Cup added to the world tour
_ Top 100 players modded with their outfits and rackets
_ New 2004 HD Courts (Roland Garros, Atp Finals in Houston, US Open 2004)
_ ESPN Spanish commentaries from 2004 season (Javier Frana and Eduardo Varela)
_ New interface and music
_ Surfaces reworked to match with the playstyle of that time.
_ New faces for some players (Massu, Agassi, Chela, Ljubicic, Taylor Dent, Davydenko)
_ Online game working fine
_ Young players and rising stars modded (Del Potro, Murray, Djokovic, Nadal)
_ Outfit changes automatic playing world tour at Wimbledon, Davis Cup and World Tour Finals
HOW TO INSTALL:
It's important (specially if you want to play online) to add this mod in a clean installation of Tennis Elbow 2013 to avoid problems.
_ Download ATP 2004 Patch: https://www.mediafire.com/file/ktlekmjfwwrf9gd/ATP_2004_Patch_by_Golden_Slam_Tenis.rar/file
_ Paste the content of the .rar where you installed the game. In my case is C:/Program and Files/Steam/steamapps/common
_ Overwrite the files (it's suggested making a security copy from the folder)
That's all! We are very satisfied with the result but let us know if you find some issue, bug, crash or something that help us to improve the patch.
This is a mod designed to create a solid structure and continue developing the following seasons so if you want to participate in any way (animations specially

Previews:
Videos: https://www.youtube.com/channel/UCmcz2tng6NUh0skJ9vbhRXQ