IPad users can Double Tap on a Docked Scorecard window and it will swap Teams (offense/defense), the Default Scorecard in view is the team at bat but if you want to quickly see the defense team's scorecard, simply double tap the scorecard window.
FTMSupport wrote:If you double-tap on the scorecard it will swap which team is showing. It will automatically always switch to the batting team when opened and as innings change, but if you accidentally double tap it, it could show the defensive team instead of the team at bat.
reference source/background: viewtopic.php?f=5&t=11770