Stella Lefty’s “Boston” commands the market’s 92.5% implied probability for the Billboard Hot 100’s #2 spot the week of October 3 because of its sustained dominance in streaming and radio data. The country-pop crossover has held the runner-up position since August on the strength of roughly 4–5 million weekly U.S. streams, top-tier Country Airplay leadership, and consistent sales, with no new releases or viral surges yet threatening its placement behind Ella Langley’s long-running “Choosin’ Texas.” Traders are pricing in stability through the early-October tracking period, though an unexpected late-September debut from a major artist or accelerated gains by tracks such as Taylor Swift’s “I Knew It, I Knew You” or Morgan Wallen’s “Been By Now” could still produce an upset if metrics shift sharply before chart lock.