The Oakland Athletics have traded right-handed pitcher Tyson Ross and minor-league infielder A.J. Kirby-Jones to the San Diego Padres in exchange for infielder Andy Parrino and left-handed pitcher Andrew Werner, as first reported by the San Jose Mercury News.

Ross, 25, has served as a starting pitcher and reliever for the Athletics the past three years in the majors. The right-handed pitcher tossed 73⅓ innings last season in 18 appearances (13 starts), but posted a poor 6.50 ERA along with a 5.6 K/9 and 4.5 BB/9.

In exchange for Ross, the Athletics will receive another pitcher that is 25 years of age in Andrew Werner, who posted a 5.58 ERA across 40⅓ innings of work in eight starts for the Padres last season. The southpaw's peripherals suggest he pitched better than that, though, because of the 7.8 K/9 and 3.1 BB/9.

The other player heading to Oakland is Andy Parrino, who has struggled at the plate the past two seasons, but offers versatility in the field.