ARLINGTON, Texas -- The Texas Rangers placed right-handed starter Andrew Cashner on the 10-day disabled list Saturday with a strained left oblique.
The Rangers purchased the contract of right-hander Ernesto Frieri from Triple-A Round Rock and had him in the bullpen for Saturday night's home game against the Seattle Mariners.
Cashner (3-6) left his most recent start Wednesday after allowing 10 hits and four earned runs in four innings of a 13-2 loss to the Houston Astros.
The team designated first baseman-outfielder Peter O'Brien for assignment.
The Rangers also announced infielder Hanser Alberto, sidelined all season with a right shoulder injury, will have surgery Monday.
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