With Joe Friday establishing the opening day and date as Friday, September 12, he and Bill Gannon watch the baseball game the next day as the Los Angeles Dodgers defeat the San Francisco Giants 3-2. The Dodgers did play a game on Saturday, September 13, 1969, but it was a 7-2 win against the San Diego Padres, not the Giants.
As the suspect is taken into custody from Gannon's home by the other Detective team, they are not seen handcuffing her. This is a procedure that is missing from most of the episodes of this otherwise very technical series. They could have handcuffed her at their vehicle & viewers just wouldn't have witnessed it but it's odd that a show that revealed so much of police procedure to the public would leave something as common as this out of arrest scenes.