The Dodgers made official their signing of Juan Rivera on Thursday, inking the outfielder and first baseman to a one-year deal plus an option for 2013 for a guaranteed $4.5 million. Rivera will be paid $4 million in 2012, with a $4 million option for 2013 or a buyout of $500,000. Jon Paul Morosi of Fox Sports reported there are $500,000 in performance bonuses each year as well.

“Juan proved to be a valuable addition to our lineup last season both in terms of his versatility and run production,” said general manager Ned Colletti. “He is capable of playing three positions and his production against left-handed pitchers gives the club added balance.”

With Andre Ethier in right field and James Loney at first base, assuming both arbitration-eligible players return, that leaves left field for Rivera and leaves Jerry Sands without a position other than occasional starter at the corners against left-handed pitching. Unless a move is made involving Ethier or Loney, which is certainly possible.

For those keeping track, the Dodgers now have $37.75 million committed to five players in 2012, plus another $22.26 million in deferred money or option buyouts. The Dodgers now have 33 players on their 40-man roster.