Originally Posted by
Kmxu
The picture with UA sizers does not show that the total length (L+W+D) of the tennis bag was exceeded. If this was true, the GA did not enforce the UA policy. She made up her own policy. The GA should be retrained, to put it mildly.
the policy for carry-on is
Carry-on Baggage must not exceed the Maximum Outside Linear Dimensions of 9 inches (22 cm) x 14 inches (35 cm) x 22 inches (56 cm), which includes its wheels and handles. Personal items must not exceed 9 inches (22 cm) x 10 inches (25 cm) x 17 inches (43 cm), which includes any wheels and handles. A personal item that exceeds these maximum linear dimensions but is not greater than 9 inches (22 cm) x 14 inches (35 cm) x 22 inches (56 cm) will be considered as Carry-on Baggage. Carry-on Baggage or personal items suspected of being oversized may require being placed into a sizing unit to determine acceptability.
the older L+W+D for carry-on has been gone for a some time. The total linear inch approach is still used in cases for checked bags.