LOS ANGELES (AP) _ The Los Angeles Dodgers began expanding their roster Saturday for the stretch drive.

Left-hander Jesse Orosco was activated from the 15-day disabled list and right-hander Dennis Springer, first baseman Chris Donnels and outfielder McKay Christiansen were called up from Triple-A Las Vegas.

Orosco, who was sidelined with a lower back injury, is 0-1 with a 3.75 ERA in 24 appearances this season.