PINNED
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**Blues prospect Colin Ralph cracks the top 10.** • **Blues:** Defensive prospect Colin Ralph ranked No. 9 in STL's NHL prospect pool • **Colin Ralph:** 20-year-old blueliner projects as a future top-4 NHL defenseman • **Blues pipeline:** Ranking signals growing organizational depth on the back end • **STL depth chart:** Ralph's rise adds competition for roster spots as contention window stays open **Watch:** How fast Ralph forces his way into Blues conversations at training camp. The lineup's set. Drop in.