Jeff Jordan brings rare hands-on marketplace operating experience from running eBay, PayPal, and OpenTable before joining a16z, where he's known as the firm's marketplace expert with a structured approach to evaluating fragmented supply and network effects. He runs 6:45 a.m. pickup basketball games at Stanford that serve as an informal networking hub and mentorship platform for student-athletes transitioning into tech careers. Jeff Jordan brings rare hands-on marketplace operating experience from running eBay, PayPal, and OpenTable before joining a16z, where he's known as the firm's marketplace expert with a structured approach to evaluating fragmented supply and network effects. He runs 6:45 a.m. pickup basketball games at Stanford that serve as an informal networking hub and mentorship platform for student-athletes transitioning into tech careers.