Notes: First basemen Andrew Vaughn and Tim Elko have each hit one homer, but have otherwise struggled so far since being sent down to Triple-A Charlotte one week ago.

It’s easy to forget that, sometimes, baseball is a contact sport. On Saturday afternoon of Baltimore's 4-2 win over Chicago, it was contact on the basepaths that led to the benches clearing in the bottom of the fourth inning between the Orioles and White Sox.

In the process of registering his first big-league RBI, Baltimore Orioles designated hitter Coby Mayo touched off some near-hostilities with the Chicago White Sox after attempting to draw an obstruction call on the bases.

BALTIMORE — Reliever Miguel Castro will have season-ending surgery after tearing the patellar tendon in his right knee this week, the White Sox announced Friday. To fill his spot, the Sox brought up veteran right-handed reliever Dan Altavilla on a one-year, $1 million contract ahead of the three-game series against the Orioles.

The Chicago White Sox signed right-handed pitcher Dan Altavilla to a one-year, $1 million contract on Friday. In a corresponding move, the team put right-hander Miguel Castro on the 15-day injured list.