SAN FRANCISCO — The Cubs had hoped to carry the momentum from their three-game sweep of the Padres into their West Coast trip.
But that momentum hasn’t quite reached California yet, and the Cubs haven’t looked anything like the team they were playing like in the first three games against the Giants.
In a battle of first-place teams, the Giants have gotten the better of the Cubs in each of the first three games of the series. The 4-3 loss Saturday assured the Cubs of their first series loss in nearly a month.
‘‘I want to win all the games,’’ manager David Ross said.