Hey buddy, applying through general quota and sports quota are totally same.

You can apply online on or before 31 may, 2019 in the official tnea website

https://tneaonline.in/

Candidates who are applying for admission under sports quota have to submit the application form, certificates and special reservation form in-person to Secretary, TNEA within specified date and time.

For more details regarding colleges you get refer

https://engineering.careers360.com/tnea-college-predictor