Arnold has been diagnosed with multiple fractures on the left side of his face as well a corneal abrasion after being struck by a line drive during a start Tuesday at Triple-A Las Vegas, according to the pitcher's mother.
Heim is not in the lineup for Wednesday's contest against the Blue Jays.
McNeil is absent from the lineup for Wednesday's game versus the Blue Jays.
Basso is slated to start Wednesday's game against the Blue Jays.
Walton went 2-for-3 with a solo home run in Tuesday's 4-2 loss to the Blue Jays.
Cortes went 1-for-4 with a solo home run in Tuesday's 4-2 loss to the Blue Jays.
Bolte went 2-for-4 in Tuesday's 4-2 loss to Toronto.
Lopez started at second base ans went 3-for-3 with an RBI and a run scored in Tuesday's 10-5 win over Seattle.
Jansen went 2-for-4 with a home run and four RBI in Tuesday's 10-5 win over the Mariners.
Jung (calf) went 2-for-5 with a double and an RBI for Triple-A Round Rock on Tuesday.
