9:41am: Sipp's deal includes opt-out dates of March 26 and June 1, MLB Daily Dish's Chris Cotillo tweets.
8:31am: The Padres have agreed to terms with lefty reliever Tony Sipp on a minor-league deal. Sipp, 30, posted a 4.78 ERA with 10.0 K/9 and 5.3 BB/9 in 37 2/3 innings for the Diamondbacks in 2013. The Diamondbacks designated him for assignment in November. He had pitched the previous four seasons for the Indians before heading to Arizona in the three-team Shin-Soo Choo deal.
In addition to Sipp, the Padres have recently added Alex Torres (via a trade with the Rays) and Patrick Schuster (via the Rule 5 Draft) as potential lefty bullpen options. GM Josh Byrnes said in November that the Padres would attempt to add lefty relievers this offseason.