The Red Sox and Yankees matchup has 1 game left in the series shown by the available schedule context: a Yankees vs. Red Sox game on June 26, 2026, and the related matchup coverage around that date. If you meant the whole season series , the exact remaining number depends on the current schedule beyond that June 26 game. Based on the available matchup listings, there is at least one scheduled meeting in that window, but I can’t verify the full remaining season count from the information on hand.