The first two days of the 2015 Baseball Winter Meetings were quiet for the Nationals, but by the time Wednesday night came around, they improved their bullpen by agreeing to terms with two relievers — right-handers Shawn Kelley and Yusmeiro Petit. By Thursday afternoon, as reporters were heading home, the Nats announced they acquired a third reliever — Trevor Gott — along with right-hander Michael Brady from the Angels for Yunel Escobar and cash.