Rusney Castillo signed on the dotted line Saturday afternoon, officially making him a member of the Red Sox for the next seven years.
Rusney Castillo is at Fenway Park for the first time and taking it all in. John Farrell says Castillo is "excited to be here".
Red Sox pitcher Joe Kelly appears fine a day after leaving the game for precautionary reasons. Xander Bogaerts will miss Saturday's game while awaiting test results.
Three things we learned from the Red Sox 5-3 loss to the Mariners: Ben Cherington keeps dealing; Xander Bogaerts can't catch a break; and Yoenis Cespedes is a beast.
Xander Bogaerts took an 0-2 changeup from Felix Hernandez right off the side of his helmet. Though he eventually left the game, he said he felt "fine" after.
It didn't look like anybody on the Mariners was going to slow down Joe Kelly on Friday night, but a shoulder tweak ended things early.