It looked for a moment Sunday afternoon that the Phillies would bring some needed relief to Philadelphia’s disappointing sports weekend. They were just three outs from winning a game that Max Scherzer started and taking two of three from the Nationals. And then — as was the case with the Sixers on Saturday — everything fell apart. Hector Neris gave up two runs in the ninth inning and the Phillies fell on a walk-off single to put a bow on a rough weekend. They will welcome the Giants, winners of four in a row, to South Philly tonight for a four-game series.