How does this work? like for example, the Giants were playing Team USA and the Cubs at the same time and day.?

please tell meHow does this work? like for example, the Giants were playing Team USA and the Cubs at the same time and day.?
It's spring training, and the teams all have ';split squads'; because they have enough players in camp to do it. It's a way of letting the minor league prospects and major league veterans to all get significant playing time so they can be properly evaluated during game situations.