When looking at the Red Sox players not named Jacoby Ellsbury who batted first in last year's lineup, you will only find three players who accumulated at least 10 at bats. Dustin Pedroia led all other players with his 49 at bats. Pedroia had a batting average of .327, an OBP of .365 and an OPS of .835. Daniel Nava had 38 at bats and an OBP of .317. Shane Victorino had 36 at bats and an OBP of .256.
Since batting leadoff may mean that you only leadoff an inning once in the game, I decided to look at current players' statistics when leading off an inning. The website I used to find my data lets you expand this data to the most reason 3 year time frame. Here is what I found:
BATTING STATISTICS WHEN LEADING OFF AN INNING (2011-2013)
Although none of the current players bring the same skill set that Ellsbury did, they all have potential to being suitable replacements this season.