ECO D23: Queen's Gambit Accepted

ECO D23 is part of volume D — Closed & Semi-Closed Games. The Lichess chess-openings dataset files 2 named lines under it. The shortest is Queen's Gambit Accepted: 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6.

That position has come up in 1,838,716 Lichess games between players rated 1600 to 2500: White won 53.3%, 5.9% were drawn and Black won 40.8%.