#2 Second Chance at First Line

Teen Season 1 Episode 2 

After the preceding events, Scott worries a lot about Allison’s father being a hunter and is distracted during practice with the lacrosse team. Coach asks Jackson to take the long stick during practice and Scott gets knocked around by Jackson. He gets angry and senses the werewolf inside him, so when Coach gives him a second chance he ends up dislocating Jackson's shoulder. Stiles gets him off the field before disaster strikes. And we see Derek watching from the sidelines.