The final major of 2025 begins on Thursday with the 2025 Open Championship, and after J.J. Spaun won the most recent major with odds longer than 100-1 at the U.S. Open, longshot bets could be a trendy way to attack the 2025 Open Championship on betting sites.

Here's a look at the tee times and groups for the first and second rounds of the 2025 Open Championship on Thursday, July 17, and Friday, July 18.

The Open Championship takes place July 17-20 at Royal Portrush in Portrush, Northern Ireland. Here’s a look at the full field and how they qualified based on the R&A’s order of exemption criteria (several players would have qualified via multiple categories;