What happened: Seventh-round rookie Athan Kaliakmanis threw his first career NFL touchdown during Sunday's London matchup. The deep completion came in relief after Marcus Mariota exited to the locker room.

Why it matters: Kaliakmanis was thrust into action with the quarterback room already depleted, as Jayden Daniels was ruled out prior to kickoff. The rookie's ability to immediately deliver an explosive play provides a necessary spark for an offense dealing with sudden attrition under center.

What to watch: The coaching staff will evaluate Mariota's status and manage the quarterback depth chart heading into their post-London schedule.