We are pleased to announce that the open development period of the new SABR Encyclopedia has started. All members are now invited to contribute to the Encyclopedia and contribute to its mission of becoming an essential reference on professional and collegiate baseball, which brings together SABR research and other resources in one convenient portal.

One of the challenges we face in the Encyclopedia project is that we have a universe of what will be over 200,000 "notable" people. That universe grows every day as players make their professional debuts, and our knowledge about past players, managers, executives, umpires, and so forth continues to evolve. We chose a wiki-based Encyclopedia in part because it gives us the flexibility to deal with these ever-changing data, and allows for collaboration in improving the data.