Blackmon produced a four-hit game on Thursday and also was 3-for-4 with two RBIs in a matchup against the Cardinals. He closed the week with consecutive three-hit games against the D-backs on Saturday and Sunday.
The 27-year-old also doubled in five straight games, tying a franchise record last accomplished in 2004 by Todd Helton.
Rockies left fielder Charlie Culberson also was a finalist for the award after hitting .478 with a .520 on-base percentage and five runs scored.
Cash Kruth is a reporter for MLB.com. Follow him on Twitter at @cashkruth. This story was not subject to the approval of Major League Baseball or its clubs.