SAN FRANCISCO — The Giants didn’t take batting practice on Monday afternoon, opting for a lighter day since they arrived in San Francisco at around 4 a.m. following a nationally televised game in Chicago. But just about every player took to the field in the afternoon to get some work in, and as those sessions came to a close, manager Tony Vitello walked back to the clubhouse with right-hander Keaton Winn.Whatever Vitello heard in that conversation was apparently enough. Four hours later, Vitello turned to Winn for a third straight day, and it cost him.Winn looked tired, hanging splitters and displaying less than his usual command, and the Washington Nationals scored three runs in the top of the ninth for a 4-3 win that was a gut punch to a Giants group that looked poised for a fifth win in six games. Vitello was left to answer for it, and while he wasn’t given much bullpen depth in his first year in the big leagues, he did have some other options Monday. Dylan Smith has very little MLB experience, but he looked right at home while picking up the save Sunday night, and he was relatively fresh.The better option was Logan Webb, who was at 99 pitches...