Rockies manager Walt Weiss said Tuesday that Rosario could be used as the right-handed hitting platoon partner for Justin Morneau at first base.

Rockies manager Walt Weiss said Tuesday that Rosario could be used as the right-handed hitting platoon partner for Justin Morneau at first base.

Analysis:

Although he appeared at first base in just four games last season, the Rockies are undoubtedly seeking ways to keep his bat in the lineup without overexposing their team defense by leaning too heavily on Rosario behind the plate. A hand injury sapped Rosario's power last season, but the departure of Michael Cuddyer in free agency could help him return to the neighborhood of 450 at-bats again.