The Oakland Athletics take on the Baltimore Orioles (16-9) today at beautiful oriole Park at Camden Yards. Mark Kotsay will send 28-year-old lefty JP Sears to the mound today. In his last three starts he has given up only six hits and one earned run in 17.1 innings. Irvin is 1-1 with a 4.64 ERA this year in his four previous starts.