For example, Papelbon, 33, who signed the largest contract ever given to a closer after the 2011 season, is owed $18 million through the end of 2015 and has a $13-million option for 2016 that vests if he finishes 55 games in 2015 or 100 games between this year and next. Burnett, 37, has an option for next year which vests with his next start and will be worth between $8.5 and $12.75 million depending on how many games he throws. And Byrd, 36, is signed through 2015, with an $8-million, 2016 option tied to plate appearances.