Plate patience and an approach that yields walks can be an indicator of a healthy offense. For the Chicago Cubs, it’s been a frustrating trend of putting runners on base at a high rate who are then consistently stranded. Finding a balance between working counts and seeking out moments to go into a more aggressive swing mode is a work in progress for an offense that has too often been a weakness. Two days after president of baseball operations Jed Hoyer expressed the need for the team to not only win series but produce some series sweeps, the Los Angeles Angels completed the sweep with the Cubs’ 3-1 loss Thursday. The Cubs (26-36) begin the final leg of the 10-game West Coast trip in San Francisco Friday night with the sixth-worst winning percentage in Major League Baseball.