It is pretty much a given that J.D. Martinez is the Houston Astros' best player at this point in the season. Martinez is hitting .282 this year and leads the team in home runs, RBI and walks. He is making a strong case that his numbers last year were not a fluke.
There is another player making a strong case that last year was not a fluke and that is second baseman Jose Altuve. He only stands at 5'5", but don't let his short stature fool you—this kid can play and is standing tall in the majors.
If the Astros are hoping for a successful rebuilding process, Jose Altuve will be a key player in that and is the team's most vital player, behind only J.D. Martinez. These are the top five reasons why he is so valuable.