I have won 11games in a row and didn't skip a rank

PLAAP6 - Summoner Stats - League of Legends
PLAAP6 / Silver 4 0LP / 43W 38L Win Ratio 53% / Draven - 11W 6L Win Ratio 65%, Lee Sin - 6W 9L Win Ratio 40%, Caitlyn - 10W 2L Win Ratio 83%, Ezreal - 3W 4L Win Ratio 43%, Garen - 2W 5L Win Ratio 29%
Is it possible to skip a rank in preseason or is this game just %%%%ing with me?
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