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They played each other six times in the last three years, and only one match ended over 122 points in the regular time, the last one before Rio. Spain won 66-56 (28-27) at the last WC in Istanbul two years ago, it was 61-48 at the Eurobasket in 2013 (32-17 for Spain after the first half). Spain played a few difficult games this summer - they've beaten Australia 58-55 (29-23), 77-54 against Canada (30-28) and 64-49 (45-27). Games from the Olympics that can be viewed as relevant here are the ones against Serbia )65-59, 31-31) and Canada (73-60, 33-29). Turkey are a typical under team in women basketball, it's hard to find a tougher team than them. They played a few test games before Rio (France - Turkey 63-56 (38-17), France - Turkey 62-54 (30-25), Serbia - Turkey 60-53 (30-25), Serbia - Turkey 61-51).
The only match that doesn't follow the pattern is the last one against Spain when the Turks won 71-66 (37-35). They lost the first round at the Olympics against France 39-55 (19-22), then against Australia 56-61 (29-26). Then they played the fast Japanese whom they managed to limit to 62 (first half 38-23). The Belarus are also one of the offensively oriented teams (33-33 first half), and then Brazil 20-36 after the first half, and two overtimes later on.
So, both Turkey and Spain play lower numbers against serious teams, which is even more obvious after the first halves. When they play each other, it's even more obvious, with the exception of the last duel which is the biggest counter argument, but the stakes are bigger today, Olympic quarterfinal, and in the part of the draw where there's no Americans.