John Jaso might not appear to belong on a list including Joe Mauer, David Ortiz, Prince Fielder and Mike Trout. But he most certainly does, and now he belongs with the A's. In a three-team trade in which the marquee player was Michael Morse, who went from the Nationals to the Mariners, the A's acquired Jaso, a catcher who posted a .394 on-base percentage in Seattle last season, fifth best among American League hitters with 300 plate appearances. Trailing only Mauer, Ortiz, Fielder and Trout, and just ahead of MVP Miguel Cabrera. That's some heavy company. "High-walk, high-contact, and he started to develop some power," A's general manager Billy Beane said on Wednesday after the trade was announced. "It wasn't that we were really looking for another catcher, but if we were going to get somebody, it wasn't going to be anybody but this guy."