BOSTON — The Boston Red Sox agreed to a $12.5 million, one-year deal with pitcher Rick Porcello and a $2.25 million contract with reliever Junichi Tazawa as they swapped proposed arbitration figures with pitcher Wade Miley and outfielder Daniel Nava.

Porcello, a 26-year-old right-hander, was acquired from Detroit last month after going 15-13 with a 3.43 ERA last season, when he led the AL with three shutouts. He made $8.5 million.

Tazawa, 28, went 4-3 with a 2.86 ERA in 71 appearances last season, his fifth with the Red Sox. He earned $1,275,000.

Miley is asking for a raise from $523,500 to $4.3 million, and the team offered $3.4 million. Nava, like Miley in arbitration for the first time, requested a hike from $556,500 to $2.25 million. Boston submitted $1.3 million.

If a case doesn’t settle, it would go to a hearing next month before a three-person panel.

DIAMONDBACKS: Arizona announced an agreement with 21-year-old Cuban pitching prospect Yoan Lopez.

The team said Saturday that Lopez had a deal for a minor league contract.

The 6-foot-4 right-hander played three seasons in Cuba’s top league, going 15-13 with a 3.76 ERA.

Lopez got an $8.27 million signing bonus, two people with knowledge of the deal told The Associated Press earlier in the week.

CUBS: Chicago say new Wrigley Field bleachers won’t be ready for the season opener.

The left- and right-field bleachers are being replaced as part of a five-year overhaul of the ballpark that turned 100 last season.

Carl Rice, the Cubs’ vice president of ballpark operations, said Saturday that the left-field bleachers won’t be ready until early May, and the right-field ones in late May.