PITTSBURGH - With a burst of speed, Jacob Melton recorded the hit he had spent most his life working toward. Then, he had to wait a little longer to make sure it counted. Melton, the Houston Astros' touted outfield prospect,

Altuve is — and will remain — the Astros’ primary left fielder, even with a sudden surplus of more natural, athletic outfielders around him.

This weekend, we saw two teams promote two of their top prospects. Both of them tallied a hit in their MLB debuts and appear to have a full-time role in their respective lineups. In addition, there is a budding star in the Washington system who could soon be joining James Wood,