PHOENIX — The Arizona Diamondbacks placed left-handed reliever Doug Slaten on the 15-day disabled list today because of a strained right knee.

Slaten was the losing pitcher in Friday's 8-7 loss to the Los Angeles Dodgers, allowing three hits over 1 1-3 innings including James Loney's solo home run leading off the 11th. Slaten faced two more batters before leaving the game with the knee injury.

Slaten is 0-3 with a 4.55 ERA. In 36 appearances, he has walked 11 and struck out 15 in 27 2-3 innings.

To replace Slaten, Arizona recalled right-hander Billy Buckner from Triple-A Tucson. Buckner was 1-0 in a brief two-game stint with the Diamondbacks in June.