Character mistake: When Sue and her opponent switch sides right before her opponent smashes her racket, the score in games is 5-1. In tennis, you only switch sides when the sum of games is an odd number (4-3, 5-2, 1-0) for example.
Last Whiff of Summer: Part 1 - S4-E1
Continuity mistake: After Axl spills milk on himself, he goes from being wet to dry and back and forth in the rest of the scene.
Continuity mistake: When Axl and Mike are driving to the lake and they get stuck, the area around them changes as they drive. When viewed inside the car they pass by more lawn areas, but then when they are outside the car it's a more rural area with trees and bushes that are not seen when inside the car. Also the volleyball players disappear when viewed from inside the car.
Last Whiff of Summer: Part 1 - S4-E1
Continuity mistake: When Mike and Frankie come into the house early in the episode, Sue has her feet up on the coffee table. Her legs switch from left over right to right over left, depending on how close the camera is. (00:01:35)
Last Whiff of Summer: Part 1 - S4-E1
Continuity mistake: When her parents come in to the room, Sue has her feet up on the coffee table, with the left foot over the right. In the next shot, they're switched to right over left, then back again. (00:01:45)
Continuity mistake: It is the 3rd quarter when the coach calls timeout and Sue talks with Axl. After he scores, the scoreboard shows that it is the 4th quarter.
Continuity mistake: When Axl is tying his dress shoes with white socks, in one shot his pants are fine, but in the very next shot they are tucked into his socks.
Continuity mistake: When Frankie pulls up her sleeve to let the teacher test her blood pressure, there are notes on her arm which Axl wrote. After she gives the speech about how she is not going to quit just because her teacher tells her to, she pulls up her sleeve again and the notes are gone. (00:16:40 - 00:18:05)