Spurred by a comment by overkill94 over at Dodger Thoughts, I tried to see which other pitchers pulled off the same sad unique fate that Joe Smith of the Mets had tonight. That is, taking the loss, while not giving up a hit, walk, or a hit batter, as well not recording an out.
Smith came into the game in the 9th inning with the bases loaded and the Mets clinging to a 5-2 lead. Smith faced catcher Carlos Ruiz who hit a grounder to shortstop Jose Reyes who threw to the plate to try force Jayson Werth, but the throw was late tagged second base too late to get the force on Shane Victorino. The play was scored as a fielder's choice and an RBI for Ruiz.
That was all for Smith on the game and Pedro Feliciano game into give up RBI doubles to So Taguchi and Jimmy Rollins as well as an RBI groundout to Ryan Howard. Rollins' hit drove in Ruiz with run #6 and that proved to be the winner as the Phillies won 8-6.
Since 1956, 12 other pitchers had taken the loss without giving up a hit, walk, or HBP or getting an out. However, all 12 had errors committed behind them (or by them).