Ahead of Sunday's finale against the Texas Rangers, the Athletics announced that they had reinstated DH Brent Rooker from the injured list. To make room for him, they designated veteran utility man Andy Ibáñez for assignment. Ibáñez had been claimed off waivers by the A's during the offseason when he was DFA'd by the Los Angeles Dodgers after signing with them as a free agent. The thought was that Ibáñez would provide some experience in the infield mix—particularly at third base—and especially against left-handers. Ibáñez last started a game for the A's on April 19 at second base, but his last start before then was 10 days earlier on April 9, even with the A's facing a lefty starter on both April 14 and yesterday, April 25. Both of those outings were against Mackenzie Gore, so that decision may have been more Gore-specific. In April, he hadn't been getting much playing time, appearing in just eight games while going 0-for-10.…