BOSTON -- Boston Red Sox designated hitter J.D. Martinez kept his contract that will pay $19,375,000 in each of the next two seasons rather than opt out Sunday and become a free agent.

The 33-year-old hit a career-low .213 in the pandemic-shortened season with seven homers and 27 RBIs, his lowest output since 2013. His salary was cut from $23.75 million to a prorated $8,796,296. His deal also gives him the ability to opt out after the 2021 World Series.

Boston declined a $6.85 million option on left-hander Martin Perez and opted to pay a $500,000 buyout to the 29-year-old, who became a free agent.

Perez was 3-5 with a 4.50 ERA in 12 starts, striking out 46 and walking 28 in 62 innings in his first season with Boston after leaving Minnesota as a free agent. He had a $6 million salary, reduced to $2,222,222 in prorated pay.

Perez joined outfielders Jackie Bradley Jr. and Rusney Castillo and right-hander Collin McHugh as Boston players who became free agents.