First baseman/outfielder Matt Adams can earn $500,000 in performance bonuses as part of his $4 million, one-year contract with the Washington Nationals.
Adams would get $50,000 for 375 plate appearances, $100,000 each for 400, 425 and 450, and $150,000 for 475 as part of the deal announced Dec. 22.
The 29-year-old hit .274 with a career-best 20 home runs and 65 RBIs in 314 plate appearances with St. Louis and Atlanta last year.
He is a career .271 hitter in six major league seasons and has reached 475 plate appearances just once, in 2014.
Adams effectively replaces Adam Lind as the backup to Ryan Zimmerman.
Adams has nine career pinch-hit home runs, and his 41 pinch-hit RBIs lead the majors since he came up in 2012.