Kontos, 26, allowed two runs in six innings for New York last September, his big league debut. He pitched to a 2.62 ERA with 9.2 K/9 and 2.6 BB/9 in 89 1/3 Triple-A innings.
2:13pm: Shea hears that Stewart is being traded to the Yankees, but it is not official and the team hasn't announced anything yet (Twitter link).
Stewart, 30, hit .204/.283/.309 in 183 plate appearances with the Giants last season after Buster Posey's injury. A release from the team says the trade will be announced later today. The details are unknown.