The Boston Red Sox's 15-game winning streak from early to mid-July stands as the longest of the 2026 regular season, anchoring trader consensus around the 13-15 games bracket. Multiple other clubs posted streaks of 9-10 games earlier in the year, but none have approached or surpassed that mark amid a tightening playoff race and shorter remaining schedules. Late-season factors such as rested bullpens, divisional matchups, and injury management make extended runs of 16 or more games uncommon. While an unexpected hot streak by a contender like the Dodgers or Braves could theoretically push higher, the absence of comparable momentum in recent weeks supports the market's heavy weighting toward the established ceiling.