My old copy of Knut Neven's Research Database (2,652,000 games) has 3316
games from 1990 to 2001 (inclusive) beginning with 1.Nc3 d5 2.e4 and
lasting at least 10 moves. White has 1294 wins, 864 draws and 1157 losses
- scoring slightly higher than 52 percent. I used a ChessBase position
search: one third of those games actually started with the moves 1.e4 d5
2.Nc3