We study the role of networks in the labor market for young scientists in the United States. Nearly one in five PhD graduates that publish after PhD graduation do so at a university where their advisor has a former co-author; graduates that have such a connection are more than twice as likely to match with the university, even within fine-grained peer groups. We document a citation premium of 12 to 36% for graduates placed through the advisor’s network. However, we find no evidence for private information about productivity being revealed through the network.