While those five players packed their bags and said their goodbyes after Wednesday's first round, they won't be joined at the airport by any others in the world's top 20. One member of each of the top five seeding spots was given his walking papers, meaning there are plenty of elite players remaining at La Costa.
Let's break down Thursday's 16 matches:
Jason Sobel is ESPN.com's golf editor. He can be reached at Jason.Sobel@espn3.com.