Jaso hit .271/.387/.372 in 249 plate appearances for the A’s in 2013, with three homers, 12 doubles, 31 runs and 21 RBI. He made 42 starts behind the plate and 13 as a designated hitter.
But he didn’t play after July 25 after sustaining a concussion. His .387 on-base percentage was the fifth-best in the American League among hitters with at least 200 plate appearances.
The left-handed hitter made all of his starts against right-handed pitchers last season. He spent two full seasons and part of a third with the Tampa Bay Rays and played with the Seattle Mariners in 2012, joining the A’s last January (a year ago today, coincidentally) as part of a three-team deal that sent A.J. Cole, Blake Treinen and, later, Ian Krol to the Washington Nationals, with Jaso going to Oakland and Mike Morse moving from the Nationals to the Mariners.
Morse recently signed as a free agent with the San Francisco Giants.
Jaso was drafted by Tampa Bay in the 12th round in the 2003 draft out of Southwestern College in Chula Vista and made his debut in the majors in September 2008. He played in the postseason twice with the Rays, in 2010-11, where he was 3-for-14 with a walk and an RBI.