De La Rosa called up; Nava sent down

BOSTON -- As right-hander Rubby De La Rosa was called up from Triple-A Pawtucket to make Saturday night’s start in Boston, the Red Sox optioned outfielder Daniel Nava back to Pawtucket to make room on the 25-man roster.

Red Sox manager John Farrell said the decision to send Nava back down after he appeared in five games for Boston was largely predicated on the state of the team’s bullpen.

“Given the workload of the bullpen of late, we wanted to keep Alex Wilson with his multi-inning capability in the event that the need arises,” Farrelll said, “so that we’re not overtaxing that group.”

Farrell also said that the Sox wanted to keep Milton, Mass., native Alex Hassan on the roster, after the outfielder was called up from Pawtucket on Friday, to provide a needed right-handed bat.

De La Rosa, 25, has pitched in 25 career Major League games, making 10 starts -- all with the Los Angeles Dodgers. He has a 4-7 combined record and 4.21 ERA.

Nava has hit at a .130 clip in 22 games for the Red Sox this season. While with the PawSox, he hit .253 with three home runs and 14 RBIs.