LOS ANGELES -- Vladimir Guerrero was placed on the 15-day disabled list Saturday with a partial dislocation of his left shoulder.
X-rays taken at Anaheim Memorial Hospital and an exam by team doctor Lewis Yocum confirmed the initial diagnosis. Guerrero sustained the injury while sliding headfirst into home in Friday's 9-0 win over the Dodgers.
Guerrero's arm was placed in a sling to immobilize it, and he will have an MRI next week, either Monday or Tuesday, to assess the severity of the injury. Yocum said he wants the area to calm down before proceeding with the test, but added the two-week window while Guerrero is on the DL should provide clarity to the issue.
"The shoulder did not come out of the socket, but because of the inherent risk of this, we decided not to take any chances," Yocum said of placing the 2004 American League MVP on the DL.
Guerrero had a similar injury about five years ago while playing in Montreal, which Yocum said gives him greater concern. But he is unable to determine a course of treatment, including the possibility of surgery and length of down time, without the MRI.
The Angels called up outfielder Curtis Pride from Triple-A Salt Lake and moved right-handed reliever Bret Prinz from the 15-day DL to the 60-day DL to make room on the 40-man roster for Pride.
Guerrero was waved home by third-base coach Ron Roenicke on Steve Finley's two-out double Friday, but as the Dodgers executed a perfect relay, he tried to avoid the tag of catcher Jason Phillips and jammed his left hand and shoulder into home plate.
Yocum said the injury had already subsided as Guerrero was being attended to in the trainer's room of the visitors' clubhouse at Dodger Stadium, but even a partial dislocation can produce further injury to the surrounding area.
"It is less traumatic than a full dislocation is to the soft tissue," Yocum said. "Any time there is an injury like this there is some concern, but that is why we're being cautious."
Mike Scarr is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.