Although one's relationship with Jesus Christ IS personal, that does not necessarily make it private. For one to say that God was with US today would probably lend to the argument of downplaying the other side's faith; but, to acknowledge God's Hand in one's individual successes is not "hypocritical" in and of itself. That would have to be determined on an individual case basis...and sometimes in the "realm of competition", with emotions strongly involved, it may be quickly spoken in a different manner than if a little more time and thought were given...especially by those who may be deemed still "young in the faith".
For those of us who recognize Jesus Christ as our Lord, we also recognize that there is not only a personal relationship, but also a "public calling",
and to be able to have a national venue in order to express our gratitude (as Pujols also had, even though not a victor in THIS realm of competition) would be a great honor. I would hope that this explanation (desiring to be "non-preachy" 
) would help take away some of the corniness. 