The Boston Red Sox secured the longest win streak of the 2026 MLB season with a 15-game run from early to late July, tying the franchise record and outpacing all other clubs amid a midseason turnaround. No team has approached or surpassed that mark through mid-September, as evidenced by shorter surges such as eight-to-10-game stretches from contenders like the Padres, Dodgers, Cubs, and Royals. With roughly 10 games remaining for most clubs, the Rays’ strong overall record and recent form have not translated into a comparable streak. A realistic challenge would require another team, such as Tampa Bay or a wild-card contender, to win out or post at least 16 consecutive victories in the final stretch, though schedule difficulty, pitching matchups, and the compressed timeline make such a run highly improbable.