The Red Sox designated Niuman Romero for assignment to make room for Ryan Shealy, according to Gordon Edes of ESPNBoston.com (via Twitter). The 25-year-old Romero appeared in one game at first and another at second, but did not reach base in four plate appearances this year.
Shealy, 30, has posted an overall .240/.361/.489 line with the Triple A affiliates for the Rays and Red Sox this year. The right-handed hitting first baseman has a .764 OPS in parts of four big league seasons, though he hasn't played in the majors since 2008.
Kevin Youkilis is in tonight's lineup, but he gave Red Sox fans a scare when he appeared to hurt his right ankle last night. Shealy will provide depth off the bench and could play first if Youkilis needs a break.